Update .env.example for development environment configuration

- Changed NODE_ENV from production to development for local testing.
- Updated HASS_HOST and HASS_SOCKET_URL to point to local Home Assistant instance.
- Added PORT and LOG_LEVEL variables for better control over application settings during development.

.env.example

@@ -1,3 +1,6 @@
-NODE_ENV=production
-HASS_HOST=your_home_assistant_url
-HASS_TOKEN=your_home_assistant_token
+NODE_ENV=development
+HASS_HOST=http://homeassistant.local:8123
+HASS_TOKEN=your_home_assistant_token
+PORT=3000
+HASS_SOCKET_URL=ws://homeassistant.local:8123/api/websocket
+LOG_LEVEL=debug