Disable CMS Tramp menu if other VTX device configured

[etracer65]

I realize that this is unusual in that the PR is against the 4.1-maintenance branch, but this has already been fixed in a more comprehensive way for 4.2 in #9066. However we have an ongoing support problem in that the CMS Tramp VTX menu presents what appears to be a functional menu that can change channels and bands even if the user has configured a SmartAudio device. This results in a lot of confusion. If the SA device is actually working, then the band/channel/power settings worked since the affected the vtx_common layer. But the status line does not display (because the vtx isn't Tramp). If the SA device wasn't working, then the user can still change the band/channel/power thinking they're doing someone but they are having no affect.

This PR updates the CMS Tramp menu to present a "disabled" menu with all 0 values that prevents changing settings if the VTX device is not configured as Tramp. Also the status message reports "TRAMP NOT CONFIGURED" to help the user identify they're using the wrong menu. For example:

None of the settings can be changed and the "Set" to save the settings is disabled.

This is meant to be an interim workaround for 4.1 as it's improved with an automatic menu selection in 4.2.

[etracer65]

Also tested with a Tramp vtx to confirm that it still functions normally.

[mikeller]

Still a considerable amount of code that is needed to work around this. ☹️

[etracer65]

Looks like more than it really is though. Mostly just wrapping a if (!trampDeviceConfigured) around code blocks but the diff makes it look like more.

[etracer65]

And all this goes away in 4.2.