[Plugin] Enhance Game Twitter Plugin Auth Server Shutdown

[Ang-dot]

Summary

Enhance game-twitter-plugin server auth shutdown mechanism.

Changes

• move self.server.shutdown() to another thread to avoid server hang.
• standardize log output with GAME Node SDK.

Dev Testing

• Video Recordings

  Use Case	Before	After
  Successful Auth	https://drive.google.com/file/d/16dj9SuviEH5MsP95Z7aJcIV5a_jnw5vs/view?usp=drive_link Authenticated but server hangs (page loads indefinitely, terminal not ended)	https://drive.google.com/file/d/1l9th6_hwZ6O2Os7KJI3fmRtiSJ83A6m6/view?usp=drive_link Authenticated and successful auth page loaded, server is shutdown after
  Failed Auth	https://drive.google.com/file/d/11rgsRO15odVfhyHt_F_f3kfJowR6QJvX/view?usp=drive_link Invalid request page loaded but terminal still active (auth server still running)	https://drive.google.com/file/d/1LcrbFI7WAeRyJg9_6Cp6hVC-Zy9jiDxX/view?usp=drive_link Invalid request page loaded and server is shutdown

[celesteanglm]

nice catch!