Upstream LLVMExtra changes

[maleadt]

Now that LLVM is hosted on Github, it's much easier to contribute and we should upstream some of our LLVMExtra extensions to the C API.

• [NewPM] Add pass options for InternalizePass to preserve GVs. llvm/llvm-project#91334
• [LLVM][NewPM] Add a C API for setting the PassBuilder AA pipeline. llvm/llvm-project#102482
• [LLVM][NewPM] Add C API for running the pipeline on a single function. llvm/llvm-project#103773
• [LLVM] Add a C API for creating instructions with custom syncscopes. llvm/llvm-project#104775
• [LLVM] Add C API support for handling global object metadata. llvm/llvm-project#104786
• [LLVM][C API] Support Value extraction from a MetadataAsValue. llvm/llvm-project#105501
• [LLVM][C API] Clearing initializer and personality by passing NULL. llvm/llvm-project#105521