chore: add util scripts

utils/get_last_uid.py

@@ -0,0 +1,11 @@
+import json
+
+
+def main():
+    with open("players.json", "r", encoding="utf-8") as f:
+        d = json.load(f)
+    print(d[-1]["userId"])
+
+
+if __name__ == "__main__":
+    main()