Support for ELRS universal binding

[3djc]

Is there an existing issue for this feature request?

• [X] I have searched the existing issues

Is your feature request related to a problem?

ELRS introduced a way for the TX to initiate binding as part of https://github.com/ExpressLRS/ExpressLRS/pull/2542

Describe the solution you'd like

Support for that feature in EdgeTX

Describe alternatives you've considered

Using the script

Additional context

No response