Initial development release

Full Changelog: https://github.com/Twist333d/chainlit-claude/commits/v0.1.0

Key features:

• Basic chainlit UI to chat with Claude Sonnet 3.5
• Prompt caching support for system prompt, tool definition and 2 most recent user messages
• Tool support: Uses firecrawl search API to scrape results from the web and use them in the responses
• Performance tracking: see usage and caching stats after each response