[llvm] [NFC] Add myself as part of the list of contributors in `CREDITS` (PR #144035)

[Aaron Ballman via llvm-commits]

AaronBallman wrote:

> My general thinking is that we should probably discontinue this file (as in, not add any new entries). Not many people add themselves here, even if they have made very substantial contributions.
> 
> The Maintainers.md file (including the list of historical maintainers) is probably more representative of major contributors by area, and the git history of contributors overall.

Perhaps we should have an RFC to simply remove the credits files across the monorepo? Now that we're on GitHub, who our contributors are is now automatically tracked and displayed in a better way, and the Maintainers file serves the need of figuring out who to go talk to for a given subject.

https://github.com/llvm/llvm-project/pull/144035