[clang] [clang-format]: Split alignment of declarations around assignment (PR #69340)

[Owen Pan via cfe-commits]

https://github.com/owenca commented:

See https://github.com/llvm/llvm-project/issues/66857#issuecomment-1793022188. Can you make this a suboption, e.g. `AlignFunctionPointers`? We can add another (e.g. `AlignConstructorsDestructors`) for ctors and dtors in the future.

https://github.com/llvm/llvm-project/pull/69340