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>

.dockerignore

@@ -0,0 +1,13 @@
+__pycache__
+*.pyc
+.pytest_cache
+.git
+.gitignore
+.venv
+README.md
+tests/
+refresh_token.py
+save_token.py
+deploy.sh
+wework-bot.service
+.gitea-ci.yml