Add Daniel Tian as MR Coach

Merged Daniel Tian requested to merge dftian-master-patch-79510 into master

Why you want to become a Merge Request Coach?

To guide community members on how best to contribute to GitLab and make them feel welcome!

How much time you are planning to spend on it?

2 hours per week.

Which duties you are focusing on (e.g. triage, finish stale MRs)?

Review community contribution MRs, keep MRs active and let contributors know that we're actively looking at them, and finish up stale MRs.