add nano g2 usb companion

variants/nano_g2_ultra/platformio.ini

@@ -55,3 +55,27 @@ lib_deps =
   adafruit/Adafruit GFX Library @ ^1.12.1
   stevemarple/MicroNMEA @ ^2.0.6
   end2endzone/NonBlockingRTTTL@^1.3.0
+
+[env:Nano_G2_Ultra_companion_radio_usb]
+extends = Nano_G2_Ultra
+build_flags =
+  ${Nano_G2_Ultra.build_flags}
+  -I src/helpers/ui
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+  -D OFFLINE_QUEUE_SIZE=256
+  -D DISPLAY_CLASS=SH1106Display
+  -D PIN_BUZZER=4
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Nano_G2_Ultra.build_src_filter}
+  +<helpers/ui/SH1106Display.cpp>
+  +<helpers/ui/buzzer.cpp>
+  +<../examples/companion_radio>
+lib_deps =
+  ${Nano_G2_Ultra.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+  adafruit/Adafruit SH110X @ ~2.1.13
+  adafruit/Adafruit GFX Library @ ^1.12.1
+  stevemarple/MicroNMEA @ ^2.0.6
+  end2endzone/NonBlockingRTTTL@^1.3.0