Add Perfecto MCP version info and GitHub update-check tools

[diego-ferrand]

This pull request introduces a new tools_manager module to support version and update checks for the Perfecto MCP, integrates it into the main server, and adds comprehensive tests. The most important changes are:

New Tools Manager Functionality:

• Added tools/tools_manager.py implementing the ToolsManager class and a new MCP tool, providing version and check_updates actions to report the current MCP version, runtime, and platform info, and to check for updates via the GitHub releases API. This includes robust error handling for network failures and user guidance for manual/automatic updates.

Integration with Server:

• Registered the new tools_manager in the server by importing and invoking its register function in server.py, ensuring the new tool is available in the MCP toolset. [1] [2]

Configuration Updates:

• Updated all GitHub-related URLs in config/perfecto.py to point to the new PerfectoCode organization, added the GITHUB_API_LATEST_RELEASE constant for update checks, and updated the support message accordingly.

Testing:

• Added a new test suite tests/test_tools_manager.py with extensive tests for version reporting, platform normalization, asset matching, update checking (including when up-to-date, when an update is available, and various error conditions).