[clang] [clang-format] Introduce "ReflowComments: IndentOnly" to re-indent comments without breaking internal structure (think Doxygen). (PR #96804)

[Iuri Chaer via cfe-commits]

ichaer wrote:

@mydeveloperday, what do you think, is this good to merge?

https://github.com/llvm/llvm-project/pull/96804