feat(notifications): add overlay notifications with position config (#110)

launcher/types.ts

@@ -207,6 +207,8 @@ export interface PluginRuntimeConfig {
   autoStart: boolean;
   autoStartVisibleOverlay: boolean;
   autoStartPauseUntilReady: boolean;
+  overlayLoadingOsd?: boolean;
+  osdMessages: boolean;
   texthookerEnabled: boolean;
 }