Add images, update manifest

application.fam

@@ -5,8 +5,9 @@ App(
     entry_point="asteroids_app_entry",
     cdefines=["APP_PROTOVIEW"],
     requires=["gui"],
-    stack_size=8*1024,
+    stack_size=8 * 1024,
     order=50,
     fap_icon="appicon.png",
     fap_category="Games",
+    fap_icon_assets="assets",  # Image assets to compile for this application
 )