Codex C4D Bridge distributable package

Included:
- README.md
- install_c4d_bridge.ps1
- codex_c4d_bridge/codex_c4d_bridge.pyp
- codex_c4d_bridge/bridge_config.json
- codex_c4d_bridge/c4d_bridge_client.ps1

Excluded intentionally:
- bridge_token.txt
- bridge.log
- __pycache__/
- user-specific Cinema 4D preference folder names

Notes:
- The bridge binds to 127.0.0.1 by default.
- Each recipient gets their own bridge_token.txt on first plugin start.
- The PowerShell client auto-finds the newest installed bridge token under %APPDATA%\MAXON.
