Add Docker support and enhance configuration management

- Introduced Dockerfile for building and running the application in a containerized environment.
- Added .dockerignore to exclude unnecessary files from the Docker context.
- Updated README.md with detailed Docker installation instructions and Node.js version management using nvm.
- Refactored environment variable handling in src/index.ts and src/config/hass.config.ts for improved configuration management.
- Enhanced TypeScript configuration to include JSON module resolution and updated exclusion patterns.
- Updated .gitignore to include additional files for better environment management.

src/config/hass.config.ts

@@ -0,0 +1,6 @@
+export const HASS_CONFIG = {
+    BASE_URL: process.env.HASS_HOST || 'http://192.168.178.63:8123',
+    TOKEN: process.env.HASS_TOKEN,
+    SOCKET_URL: process.env.HASS_HOST || 'http://192.168.178.63:8123',
+    SOCKET_TOKEN: process.env.HASS_TOKEN,
+};