[llvm] [nfc][llvm-profdata]Refactor llvm-profdata show* code, by moving function-scope options to a show_llvmprofdata namespace (PR #71328)

[David Li via llvm-commits]

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@@ -2406,6 +2407,14 @@ static void traverseAllValueSites(const InstrProfRecord &Func, uint32_t VK,
   }
 }
 
+namespace {
+struct InstrProfilePerFuncOptions {
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david-xl wrote:

Lack of mem-op size is just a missing feature. Adding a warning and ignore would be fine.

https://github.com/llvm/llvm-project/pull/71328