Log warning if deprecated control is used

[Holzhaus]

This will make it easier to find uses of deprecated controls. Idea blatantly stolen from @Swiftb0y who suggested it here: #11960 (comment)

[Swiftb0y]

should we raise the severity conditionally (eg add a member to ControlFlag and check similar to AllowInvalidKey) for C++ access?

[Swiftb0y]

LGTM. though its not my turn to merge IMO since it was my suggestion.

[daschuer]

LGTM, Thank you.

[daschuer]

I think this causes a regresson, in case the original CO is not deprecteded but are just short hands for the bulky original:

warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterLow" - use "[EqualizerRack1_[Channel3]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterMid" - use "[EqualizerRack1_[Channel3]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterHigh" - use "[EqualizerRack1_[Channel3]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterLowKill" - use "[EqualizerRack1_[Channel3]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterMidKill" - use "[EqualizerRack1_[Channel3]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterHighKill" - use "[EqualizerRack1_[Channel3]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterLow" - use "[EqualizerRack1_[Channel1]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterMid" - use "[EqualizerRack1_[Channel1]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterHigh" - use "[EqualizerRack1_[Channel1]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterLowKill" - use "[EqualizerRack1_[Channel1]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterMidKill" - use "[EqualizerRack1_[Channel1]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterHighKill" - use "[EqualizerRack1_[Channel1]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterLow" - use "[EqualizerRack1_[Channel2]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterMid" - use "[EqualizerRack1_[Channel2]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterHigh" - use "[EqualizerRack1_[Channel2]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterLowKill" - use "[EqualizerRack1_[Channel2]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterMidKill" - use "[EqualizerRack1_[Channel2]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterHighKill" - use "[EqualizerRack1_[Channel2]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterLow" - use "[EqualizerRack1_[Channel4]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterMid" - use "[EqualizerRack1_[Channel4]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterHigh" - use "[EqualizerRack1_[Channel4]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterLowKill" - use "[EqualizerRack1_[Channel4]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterMidKill" - use "[EqualizerRack1_[Channel4]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterHighKill" - use "[EqualizerRack1_[Channel4]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterLow" - use "[EqualizerRack1_[Channel3]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterMid" - use "[EqualizerRack1_[Channel3]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterHigh" - use "[EqualizerRack1_[Channel3]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterLowKill" - use "[EqualizerRack1_[Channel3]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterMidKill" - use "[EqualizerRack1_[Channel3]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel3]" "filterHighKill" - use "[EqualizerRack1_[Channel3]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterLow" - use "[EqualizerRack1_[Channel1]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterMid" - use "[EqualizerRack1_[Channel1]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterHigh" - use "[EqualizerRack1_[Channel1]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterLowKill" - use "[EqualizerRack1_[Channel1]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterMidKill" - use "[EqualizerRack1_[Channel1]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel1]" "filterHighKill" - use "[EqualizerRack1_[Channel1]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterLow" - use "[EqualizerRack1_[Channel2]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterMid" - use "[EqualizerRack1_[Channel2]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterHigh" - use "[EqualizerRack1_[Channel2]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterLowKill" - use "[EqualizerRack1_[Channel2]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterMidKill" - use "[EqualizerRack1_[Channel2]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel2]" "filterHighKill" - use "[EqualizerRack1_[Channel2]_Effect1]" "button_parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterLow" - use "[EqualizerRack1_[Channel4]_Effect1]" "parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterMid" - use "[EqualizerRack1_[Channel4]_Effect1]" "parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterHigh" - use "[EqualizerRack1_[Channel4]_Effect1]" "parameter3" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterLowKill" - use "[EqualizerRack1_[Channel4]_Effect1]" "button_parameter1" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterMidKill" - use "[EqualizerRack1_[Channel4]_Effect1]" "button_parameter2" instead
warning [Main] ControlObject accessed via deprecated key "[Channel4]" "filterHighKill" - use "[EqualizerRack1_[Channel4]_Effect1]" "button_parameter3" instead

Can we store a deprecated flag along with the alias to target that?

[Holzhaus]

But these CO are deprecated, since Version 2.0.0. See https://manual.mixxx.org/2.3/en/chapters/appendix/mixxx_controls#control-[ChannelN]-filterLow

Let's just replace these occurrences with the recommended, non-deprecated alternative.

[Holzhaus]

#11990