AT- 416 Added functionality to fetch PR title & description from Mermaid AI via pr-summary endpoint#45

Prashant-7718 merged 7 commits intomainMermaid-Chart/plugins:mainfrom

AT-416-add-new-tool-to-mcp-pr-summary-that-call-mermaid-ai-through-mermaid-sdk-and-collabMermaid-Chart/plugins:AT-416-add-new-tool-to-mcp-pr-summary-that-call-mermaid-ai-through-mermaid-sdk-and-collabCopy head branch name to clipboard