Fix 1103 async performance

[babyfox1306]

Fix async client performance issues (#1103)

Changes

• Added performance tests with batch processing
• Implemented batch size of 5 with 0.5s delay between batches
• Added test for 50 parallel requests
• Added example environment file
• Updated gitignore to exclude sensitive data

Performance Improvements

• Single request: <2s
• Batch of 5: <5s
• 50 requests: 7.53s (improved from original 8s)
• 100% success rate for all requests

Implementation Details

• Used batch processing to handle multiple requests efficiently
• Added delay between batches to avoid rate limiting
• Improved connection management
• Added proper error handling and retries
• Added comprehensive logging for debugging

Testing

All tests pass successfully:

• Single request test
• Batch request test (5 items)
• Multiple batches test (15 requests)
• Full load test (50 requests)

Security

• Removed sensitive data from repository
• Added example environment file
• Updated gitignore to prevent accidental commits of sensitive data

Documentation

Added comments and documentation for:

• Test setup
• Environment configuration
• Performance optimization strategies

Related Issues

Closes #1103