Support AOT compiler with LLVM 17 (#2567)

Adapt API usage to new interfaces where applicable, including LLVM function
usage, obsoleted llvm::Optional type and removal of unavailable headers.

Know issues:
- AOT static PGO isn't enabled
- LLVM JIT may run failed due to llvm_orc_registerEHFrameSectionWrapper
  isn't linked into iwasm

core/iwasm/compilation/aot_llvm_extra2.cpp

@@ -4,8 +4,10 @@
  */
 
 #include <llvm-c/TargetMachine.h>
+#if LLVM_VERSION_MAJOR < 17
 #include <llvm/ADT/None.h>
 #include <llvm/ADT/Optional.h>
+#endif
 #include <llvm/IR/Instructions.h>
 #if LLVM_VERSION_MAJOR >= 14
 #include <llvm/MC/TargetRegistry.h>
@@ -18,6 +20,13 @@
 
 #include "aot_llvm_extra2.h"
 
+#if LLVM_VERSION_MAJOR >= 17
+namespace llvm {
+template<typename T>
+using Optional = std::optional<T>;
+}
+#endif
+
 static llvm::Optional<llvm::Reloc::Model>
 convert(LLVMRelocMode reloc_mode)
 {