Add T16 support

Added support for:
- T16 radio
- internal multi-protocol module.
- flashing internal and external multi-protocol modules.

Many thx to:
- goebish, for the hardware support.
- qba667, for the original patches for the internal multi-protocol support (UI and serial com).

radio/util/build-firmware.py

@@ -139,6 +139,11 @@ def main():
         cmake_options["PCBREV"] = "T12"
         firmware_options = options_taranis_x9dp
         maxsize = 65536 * 8
+    elif board_name == "t16":
+        cmake_options["PCB"] = "X10"
+        cmake_options["PCBREV"] = "T16"
+        firmware_options = options_jumper_t16
+        maxsize = 2 * 1024 * 1024
     else:
         exit(INVALID_BOARD)