examples: add basic app metadata to all existing examples.

examples/camera/01-read-and-draw/read-and-draw.c

@@ -26,6 +26,8 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
     SDL_CameraID *devices = NULL;
     int devcount = 0;
 
+    SDL_SetAppMetadata("Example Camera Read and Draw", "1.0", "com.example.camera-read-and-draw");
+
     if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_CAMERA)) {
         SDL_Log("Couldn't initialize SDL: %s", SDL_GetError());
         return SDL_APP_FAILURE;