[llvm] [nfc][llvm-profdata]Refactor llvm-profdata showInstrProfile (PR #71328)

[David Li via llvm-commits]

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

Will it be limited to InstrProfile? Perhaps just name it "PerFuncOptions"?

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