Set a title in `serverInfo.title` for nicer display

[connor4312]

Describe the feature or problem you’d like to solve

Currently the Github MCP server doesn't set a human-readable serverInfo.title in its InitializeResult. If it did we'd get a more friendly label for it in VS Code :)

Proposed solution

Set the serverInfo.title 🙂

Refs:

microsoft/vscode#272374

[javieraguilar05555-eng]

#1288