Create .env file and add required environment variables

[Neihouse]

Action Title: Create .env File

• Create a new file named .env in the root directory of your project.
• Add the necessary environment variables to the .env file, such as DATABASE_URL, SPOTIFY_API_KEY, GOOGLE_CLOUD_PROJECT_ID, GOOGLE_CLOUD_STORAGE_BUCKET, etc.
• Ensure that your application code loads these variables, typically using a library like godotenv for Golang or dotenv for Node.js.
• Example content of .env file:

  DATABASE_URL=your_database_url
  SPOTIFY_API_KEY=your_spotify_api_key
  GOOGLE_CLOUD_PROJECT_ID=your_project_id
  GOOGLE_CLOUD_STORAGE_BUCKET=your_storage_bucket

• Load the .env file in your application initialization code.