docs: Add section for Windows Visual Studio build.
docs: Add section for Windows Visual Studio build.

Just the basics for now: which version of VS we're using, the compiler
stuff (clang, not VC++), and the version of the UCRT we're using.

Signed-off-by: Philip Tricca <fd418754d31777cf39b16b99b0350486ab840079@intel.com>

01org/tpm2-tss,01org/tpm2-tss,tpm2-software/tpm2-tss,01org/tpm2-tss,tpm2-software/tpm2-tss,01org/TPM2.0-TSS,01org/TPM2.0-TSS,01org/TPM2.0-TSS,01org/TPM2.0-TSS,tpm2-software/tpm2-tss