[NV14] Use trim hats to emulate key events when standalone lua script running (#985)

* Preliminary trims as keys for lua
Largely based on open-flysky implementation

* Add `isLuaStandaloneRunning()`

* Add more virtual events

* Tweak virtual events further

* Finish remapping keys to virtual events

* Move some virtuals to right trim hat

* Add missing "defined"

* Revert to common EVT_VIRTUAL_MENU mapping

* Make keys/trims reset backlight like other radios

radio/src/lua/lua_api.h

@@ -240,6 +240,9 @@ struct LuaMemTracer {
 
 void * tracer_alloc(void * ud, void * ptr, size_t osize, size_t nsize);
 
+inline bool isLuaStandaloneRunning() {
+  return scriptInternalData[0].reference == SCRIPT_STANDALONE;
+}
 #else  // defined(LUA)
 
 #define luaInit()