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.

tsconfig.json

@@ -9,14 +9,16 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true,
     "declaration": true,
-    "allowJs": true
+    "sourceMap": true
   },
   "include": [
     "src/**/*"
   ],
   "exclude": [
     "node_modules",
-    "dist"
+    "dist",
+    "__tests__"
   ]
 }