docs: exploring multi git platform support

[setchy]

Note

The below table has been generated with the help of Gemini.
Further refinement, exploration and prioritization are required.

Git Platform Notification Support

Platform	Notifications API	Primary Method	Implementation Notes
GitHub	✅ Yes	REST (/notifications)	Server-side "Read" state and thread-based grouping.
Bitbucket Cloud	✅ Yes	GraphQL	Uses the workActivity and notifications query via Atlassian Gateway.
GitLab	✅ Yes	REST (/todos)	The /todos API is the best "Inbox" equivalent; /events for raw activity.
Gitea	✅ Yes	REST (/notifications)	Dedicated endpoint for user-specific notification feeds.
Forgejo	✅ Yes	REST (/notifications)	Currently maintains Gitea compatibility but adding unique OIDC/Federation hooks.
Azure DevOps	⚠️ Partial	REST	No unified feed; requires polling specific projects and pullRequests.
Gerrit	❌ No	REST	Change-set focused; requires custom polling of the /changes/ API.
AWS CodeCommit	❌ No	SDK/EventBridge	No user-facing inbox API; purely event-driven infrastructure.