Add tracking for commit northstar

What does this MR do?

Adds tracking using the existing tracking infrastructure so we can begin to measure our northstar metric of commit count via the Static Site Editor

Screenshots

N/A

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Closes #216676 (closed)