Make CRSF telemetry protocol by default on new builds

[zarte13]

Describe problem solved by the proposed feature

I want to use ELRS with my drone, but every time there is a PX4 update, I have to make a custom build to include CRSF. I feel like, it would be better to include CRSF for ELRS by default, as it is becoming an increasingly popular option for RC control and basic telemetry.

Describe your preferred solution

Include CRSF telemetry by default on new builds.

Describe possible alternatives

Add an option inside the configuration that wouldn't require creating a new build for switching between the old RC input driver and the new CRSF drive.

Additional context

https://docs.px4.io/main/en/telemetry/crsf_telemetry.html#px4-configuration

[hamishwillee]

At least historically it was considered too big to include in the default.

@dagar Now the other RC protocols are split into their own modules (I understand)

• what's the rule about what gets included in a board and what does not?
• Are we planning on providing custom configurations for the variants, or some kind of build server?
• If someone wanted to create their own custom configuration for this would that be accepted?

[DronecodeBot]

This issue has been mentioned on Discussion Forum for PX4, Pixhawk, QGroundControl, MAVSDK, MAVLink. There might be relevant details there:

https://discuss.px4.io/t/px4-sync-q-a-oct-23-2024/42053/1