x-ui subscription service

Available endpoints:
  /sub/clash?token=20jvQb3NX5Ufk5a4YHEhfj7k6iYwuafo
  /sub/clash-provider?token=20jvQb3NX5Ufk5a4YHEhfj7k6iYwuafo
  /sub/links?token=20jvQb3NX5Ufk5a4YHEhfj7k6iYwuafo
  /sub/base64?token=20jvQb3NX5Ufk5a4YHEhfj7k6iYwuafo
  /sub/healthz