Instead of having individual menus for RTC6705, SmartAudio, and Tramp, Now there is a single VTX menu that detects the type of active device and redirects to the appropriate protocol menu.
Reduces confusion and chances of erroneously using the wrong VTX menu.
Fixes a problem where the Tramp menu could be used to change band/channel/power even though the VTX was a SmartAudio device.
If the VTX is not configured or not communicating, a more informative message will be presented rather than a partially populated protocol menu. For example:
```
VTX NOT RESPONDING
OR NOT CONFIGURED
> BACK
```
Extends the CMS menu capabilities by adding an optional `redirectCheck` function that can conditionally return a menu that should be redirected to instead of the current menu. This redirect happens before any processing happens for the original menu. Adds flexibility to make the CMS menus have a more dynamic aspect.
CMS menu items can now be defined with a `REBOOT_REQUIRED` flag. If the user changes flagged elements the the exit/save options will change to `EXIT&REBOOT` and `SAVE&REBOOT` - ensuring that the changed items will be handled properly. This should be used for options where runtime changes either won't take effect (because they are read at boot), or for items that could have unexpected behavior if changed.
Several appropriate menus have been updated to include the flag.
To accomodate the dynamic nature of the save/exit options, the individual options have been removed from the main menu and replaced with a `SAVE/EXIT` submenu. This is the same menu that is presented as the quick-access popup save menu (yaw-right). This menu will adapt to requiring a reboot if any flagged setting is changed. Additionally the `REBOOT_REQD` arming disabled reason will be set (cleared by the reboot).
