[clang-tidy] Nominate myself as a maintainer (llvm#183173)

For the past ~8 months, I've been regularly working on clang-tidy, doing
features and cleanups, fixing issues, and reviewing PRs. I'm passionate
about the project, and I'd like to step up to be a maintainer for it!

Author: localspook

clang-tools-extra/Maintainers.rst

@@ -30,6 +30,9 @@ clang-tidy
 | Victor Baranov
 | bar.victor.2002@gmail.com (email), vbvictor (GitHub), vbvictor (Discourse), vbvictor  (Discord)
 
+| Victor Chernyakin
+| chernyakin.victor.j@outlook.com (email), localspook (GitHub), LocalSpook (Discourse), localspook (Discord)
+
 
 clang-query
 -----------