Add ExpressLRS config option to new model wizard

[gbisaga]

Is there an existing issue for this feature request?

• [x] I have searched the existing issues

Is your feature request related to a problem?

When creating fixed wing airplane models, one thing I always forget to do is link channel 5 to my arm switch for ELRS models. I recently had a crash because of this, and I went back and looked at a number of models I created, and I guess I've just gotten lucky. Part of that crash was also that my receiver failsafes were not set properly.

Describe the solution you'd like

Automatically link ch5 to the arm switch (post ELRS 4.0 it would be able to set up the new arming method using the same switch).

Describe alternatives you've considered

I'm thinking about a new screen called "radio config". This would ask what kind of radio link you're using. ELRS would set up arming, and I'm thinking also say something about failsafe if the default channel order is not that of receivers ELRS. (Mine is TAER vs the default AETR assumed by the receivers I know of anyway.) For the latter since we can't (as far as I know) know the failsafe setup, it would just be a warning now. In the future, this would also give hooks for doing radio setup on other kinds of radio links. For example, I have been frustrated by false "RF signal critically low" on Spektrum links because (according to a 4-in-1 developer, see recent help thread in discord) the RSSI is not suitable for automatic warnings. Since we do have 1RSS from every ELRS, it could also set up a telemetry alarm for that.

Additional context

I can write the lua script modification, I've done one previously.

[3djc]

There is no need to setup any specific signal alarm for ELRS, the relevant best sensor is used automagicaly as a "rssi' source for ELRS