CDRIVER-5839 Unofficial ARM64 Windows support

[adriandole]

Test system: ARM64 Windows VM running on an M1 Mac using UTM.

Build in the ARM64 Native tools command prompt.

Configure for clang:

cmake -D ENABLE_EXTRA_ALIGNMENT=OFF -D ENABLE_AUTOMATIC_INIT_AND_CLEANUP=OFF -D CMAKE_BUILD_TYPE=Debug -D ENABLE_MONGOC=ON -G "Visual Studio 17 2022" -A ARM64 -T ClangCL -D CMAKE_C_FLAGS="-w" -S srcDir -B buildDir

Configure for MSVC:

cmake -G"NMake Makefiles" -DCMAKE_SYSTEM_PROCESSOR=arm64 -DENABLE_TRACING=ON -DENABLE_SSL=WINDOWS 

[kevinAlbs]

Changes LGTM, but I expect may not resolve #1797. I expect Advapi32 is a required dependency on Windows. For example: RegCloseKey is used in mongoc-socket.c and is documented in Advapi32.

Building on x86_64 shows Advapi32 is linked. Here is a screenshot of dependency walker:

I think the difference on ARM64 is CMake does not include Advapi32 in the standard libraries. I suggest making the dependency explicit:

target_link_libraries(_mongoc-dependencies INTERFACE mongo::detail::c_platform $<$<PLATFORM_ID:Windows>:advapi32.lib>)

[kevinAlbs]

LGTM, thank you for investigating. Filed CDRIVER-5839 to track. Added Create tickets to track PRs to the process document.