Cross Flipper Communication

This is my attempt to implement the following for the Flipper Zero:

• Flipper -> Flipper Chat over SubGHz
• Flipper -> Flipper Chat over IR
• Flipper -> Flipper File Transfer over IR

Recommended UK frequencies

1. 446.00625
2. 446.01875
3. 446.03125
4. 446.04375
5. 446.05625
6. 446.06875
7. 446.08125
8. 446.09375

Thanks to:

• codeallnight for the basic GUI scaffolding