* Allow to disable telemetry alarams
This mainly useful for cheap transceivers that have telemetry but no power amplifier and very limited range of often 10-20 meters. This includes fishpepper's tinyFISH FC (and its legal/illegal clones) and also Spektrum BNF models.
* Always disable a warning when RSSI Warnings are disabled
* Compile fix
* Fix typos, also mute sensor lost
Refactor the FrskyRSSIAlarm[2] into a EEPROM compatible RssiAlarm struct
* Compile fixes
* Also refactor Companion
* Cleanup unused datastruct on ARM
* Compile fix for AVR
* Change int to uin8_t for avr
* Fix strings
Also use SNR instead RSSI for FlySky since SNR gives a better indication of signal quality and also our current implementation of RSSI warning cannot really handle negative values
* Fix Multimodule showing up as Crossfire when only multimode and not crossfire is enabled.
* Don't hardcode telemetry to be Frysky on non STM32 arm targets
* Port multi module code to 9X platforms
* Allow Spektrum telemetry protocol to be selected as protocol for the telemetry selection
* Fix infinite loop in spektrum code
* Fix cosmetics
Changes also done for Horus and Taranis UI where appropriate
Bertrand Songis