Add tool working directory parameter

[devin-ai-integration]

Add Tool Working Directory Parameter

This PR adds:

• Support for passing working directory parameter when executing tools via MCP
• Working directory parameter is required when CLI flag is not passed, optional when flag is passed
• Updated tests to verify the new functionality
• Improved path validation using Node.js built-in path.relative() function
• Resolved merge conflicts with main branch
• Removed try-catch blocks from CLI argument parsing

Implementation Details

• Modified the shell_exec tool schema to conditionally require workingDir parameter based on CLI flag
• Updated tests to include workingDir parameter in test cases
• Fixed ProcessOutput type mocking in tests
• Enhanced path validation using path.relative() for more reliable directory validation
• Adapted to use Command API instead of program for CLI parsing
• Simplified CLI argument parsing by removing unnecessary error handling

Testing

• Compiled successfully with pnpm build
• All tests passing with pnpm test
• Verified that workingDir parameter works correctly with tool execution

Link to Devin run: https://app.devin.ai/sessions/bd23fbf0492b460f851d2f1f910e60ca
Requested by: hinoshita1992@gmail.com

[devin-ai-integration]

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