App intents

[garthvh]

What changed?

Modified the BLEManager class to make it a singleton to access from anywhere. Added two App Intents: Channel Message and Send Waypoint

Why did it change?

Allowing users to utilize apple shortcuts to greatly customize their Meshtastic experience. Example: a custom weather-sending bot built with no coding experience and just iOS shortcuts. Also will enable Siri functionality and widgets for future development.

How is this tested?

I tested sending waypoints from the shortcut on my phone and tested sending messages. The normal functionality of ble works after my BLEManager change

Screenshots/Videos (when applicable)

Checklist

• My code adheres to the project's coding and style guidelines.
• I have conducted a self-review of my code.
• I have commented my code, particularly in complex areas.
• I have made corresponding changes to the documentation.
• I have tested the change to ensure that it works as intended.

[garthvh]

Sorry for the duplicate pull @thebentern and @72A12F4E I did not have @RCGV1 set up right in GitHub, this should be easier to test locally and deploy to testflight