What does this PR do?

Implements Huly.io MCP piece with 8 actions (Find/Create Person, Project, Issue, Document, Milestone) and 4 triggers for project management integration.

Explain How the Feature Works

Connects to Huly via WebSocket API. Actions handle CRUD operations, triggers provide AI suggestions for new entities. Supports dual authentication, dynamic dropdowns, and avatar handling.

Relevant User Scenarios

• Create Huly issues from external forms
• Sync team data between systems
• Auto-link documents to projects
• Monitor milestone progress

Fixes #7491 /claim #7491