fix: improve Chromecast app launch and device lookup by name

fix: stable device IDs, Cast mDNS discovery, connection cleanup

fix: use direct IP connection for Chromecast, fix URL normalization

Fix logging to use stderr for MCP stdio compatibility

refactor: update device selection hint for multiple devices in AndroidTVMCPServer

Add Chromecast casting support and Dockerfile

refactor: update app launch commands to use send_launch_app_command method

bump version to 0.2.0 in pyproject.toml and cli.py

Initial commit