[clang] Fixes and closes issues, #53390 and #58710. Added new controls to IndentNamespaceAliases, IndentUsingDeclarations and DecorateReflowedComments. (PR #102894)

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mydeveloperday wrote:

see my comment here (https://github.com/llvm/llvm-project/issues/53390) about why do we need `IndentNamespaceAliases` and `IndentUsingDeclarations` this just feels like it open the door to `IndentFunctions`, `IndentWhatever`  I don't get why Aliases and Using would need to be treated differently from anything else? am I missing something? 

https://github.com/llvm/llvm-project/pull/102894