Like the previous commit, but for UnitTests. This time all operating
systems were affected.

I also made UnitTests.vcxproj use the same way of copying as
DolphinQt.vcxproj, just for consistency.

This unit test compares ApprovedInis.json with the contents of the GameSettings folder to verify that every patch marked allowed for use with RetroAchievements has a hash in ApprovedInis.json. If not, that hash is reported in the test logs so that the hash may be updated more easily.

We currently have 32 different binaries containing unit tests. At least
when I build for Android, each one takes up over 200 MiB, and linking
them all increases my incremental build times by over a minute. I'd
like to change this for the sake of my productivity and disk space.

For reference, MSBuild is already putting all tests in a single binary.

This properly adds the header include paths when using system fmt

This prevents a failed assertion from hanging on the MSVC buildbots.

Everything that links in core doesn't need to see anything related to bochs, because it's only used internally.
Anything else that relies on bochs should be linking it in explicitly.