ClickUp MCP Server

# Pull Request ## Description <!-- Provide a detailed description of the changes introduced by this PR --> ## Related Issue <!-- Link to the issue this PR addresses (if applicable) --> Fixes # ## Type of Change <!-- Mark the appropriate option with an "x" --> - [ ] Tool functionality (new tool, tool modification) - [ ] MCP integration improvement - [ ] Bug fix - [ ] Performance optimization - [ ] Documentation update - [ ] API enhancements - [ ] Security improvement ## MCP Server Impact <!-- Describe how this change affects the MCP server behavior --> ## API Changes <!-- Describe any changes to APIs (both ClickUp API interactions and Service layer) --> ## Checklist <!-- Mark the items you've completed with an "x" --> - [ ] My code follows the code style of this project - [ ] I have tested the changes - [ ] I've verified compatibility with MCP standards - [ ] All tool schemas are properly documented - [ ] Service layer changes are backward compatible (or documented if breaking) - [ ] Rate limiting and error handling tested (if applicable) - [ ] Security considerations addressed ## Testing <!-- Describe how you tested your changes --> ## Documentation Updates <!-- List any documentation updates needed --> ## Screenshots (if applicable) <!-- Add screenshots to help explain your changes --> ## Additional Notes <!-- Any additional information that might be helpful for reviewers -->