[clang] [clang-format] Support fine-grained alignment of variable declarations (PR #160270)

[Björn Schäpers via cfe-commits]

https://github.com/HazardyKnusperkeks approved this pull request.

Based on the acceptance of the linked commit, LGTM. But please wait a bit for additional feedback.

https://github.com/llvm/llvm-project/pull/160270