feat: initial IRC bouncer implementation

Async Python IRC bouncer with SOCKS5 proxy support, multi-network
connections, password auth, and persistent SQLite backlog with replay.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,17 @@
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.venv/
+*.egg-info/
+*.egg
+dist/
+build/
+.eggs/
+*.db
+*.sqlite
+*.sqlite3
+.ruff_cache/
+.pytest_cache/
+.mypy_cache/
+*.log