Add GitHub notifications namespace

[ludeeus]

Description

Adds notification namespace to list notifications.

Type of change

• [ ] Dependency upgrade
• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (which adds functionality)
• [ ] Breaking change (fix/feature causing existing functionality to break)
• [ ] Code quality improvements

Checklist

• [x] Tests pass locally (scripts/test)
• [x] Code has been formatted (scripts/lint)
• [x] Tests added for new functionality (if applicable)

[ludeeus]

@copilot open a new pull request to apply changes based on the comments in this thread

[Copilot]

@ludeeus I've opened a new pull request, #478, to work on those changes. Once the pull request is ready, I'll request review from you.