[Continued] Use SHGetKnownFolderPath to get path to localappdata for current user

[ShikiSuen]

This PR continues the PR #4998 since the latter is not actively maintained.

[ShikiSuen]

cc @compnerd Could you please take a look at this PR to see whether there are anything else to fix?

[ShikiSuen]

Could anyone please review this?

[compnerd]

Sorry about the delay. This looks good to me!

[compnerd]

@swift-ci please test

[compnerd]

11:32:19  /home/build-user/build/buildbot_linux/none-swift_package_sandbox_linux-x86_64/tests/test-foundation-package/Output/test-foundation-networking-static-stdlib.test.tmp/test-foundation-networking | /home/build-user/build/buildbot_linux/llvm-linux-x86_64/bin/FileCheck /home/build-user/swift-integration-tests/test-foundation-package/test-foundation-networking-static-stdlib.test
11:32:19  # executed command: /home/build-user/build/buildbot_linux/none-swift_package_sandbox_linux-x86_64/tests/test-foundation-package/Output/test-foundation-networking-static-stdlib.test.tmp/test-foundation-networking
11:32:19  # .---command stderr------------
11:32:19  # | generic witness table at 0x55f2db72de98 contains out-of-bounds requirement descriptor 0x11
11:32:19  # `-----------------------------
11:32:19  # error: command failed with exit status: -6

This seems unlikely to be related ... @slavapestov any idea what this might be about?

[compnerd]

@swift-ci please test