made window look native and added icon

neoforge/src/main/resources/META-INF/neoforge.mods.toml

@@ -8,7 +8,7 @@ version = "${version}" #mandatory
 displayName = "${mod_name}" #mandatory
 #updateJSONURL="https://change.me.example.invalid/updates.json" #optional (see https://docs.neoforged.net/docs/misc/updatechecker/)
 #displayURL="https://change.me.to.your.mods.homepage.example.invalid/" #optional (displayed in the mod UI)
-logoFile="${mod_id}.png" #optional
+logoFile="assets/${mod_id}/icon.png" #optional
 credits="${credits}" #optional
 authors = "${mod_author}" #optional
 description = '''${description}''' #mandatory (Supports multiline text)