Add two new build targets to enable the possibility of using clang-cl as

an assembler for Windows on Arm builds and also clang-cl as the compiler
as well. Make appropriate changes to armcap source and peralsm scripts.

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19523)