[FancyZones] Feature Request: add hotkey to increment/decrement number of zones in template layouts.

[JordanAnthonyKing]

Summary of the new feature/enhancement

When using one of the template layouts the user needs to open the settings window each time they want to increase or decrease the number of zones. It would be more convenient if fancy zones provided a keybinding to do this without opening the settings window.

Proposed technical implementation details

Add logic in FancyZones.cpp to respond to a keypress and increment/decrement the zone-count for the active layout.

I have created a local branch that implements this feature using win+ctrl+oem_plus/oem_minus. Further work would be needed to have this setting be optional or to make this binding customisable.

[enricogior]

Hi @JordanAnthonyKing
this idea seems to fit a limited number of cases, basically only the predefined templates.
Your suggestion is a subset of #2694 that would provide a more general approach and cover not only a few cases.
I marked this "Help Wanted" since we are accepting contribution but we don't plan to add this ourselves.
If you want to open a PR, make sure the implementation is robust and handles all corner cases.
Thanks.