Add WeWork XiaoAi TTS bot - WeChat Work long connection bridge

Receives messages from WeChat Work bot via WebSocket long connection
and speaks them through XiaoAi smart speaker TTS.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,9 @@
+.env
+.mi.token
+__pycache__/
+*.pyc
+*.pyo
+.pytest_cache/
+*.egg-info/
+dist/
+build/