Cornerlays with HA

✨ Features
New Display Modes for HA Overlays: Added several new formatting options for timestamp entities (e.g., Time only, Weekday & Time) and a new countdown mode that includes hours (hh:mm:ss).

🐛 Bug Fixes
HA Connection Stability: Fixed a critical bug where the connection to Home Assistant would drop after a period of inactivity. The service now implements a robust ping-pong and auto-reconnect mechanism to ensure a stable, long-term connection.