GHA: extend clang-tidy jobs with more build options, add Windows job

GHA: extend clang-tidy jobs with more build options, add Windows job

- linux: wolfssl, wolfssh (replacing libssh2), ech, kerberos/GSSAPI,
  ssls-export (libssh2 remains tested on macos.)

- macos: brotli, zstd, c-ares, gnutls, mbedtls, gsasl, rtmp, ssls-export

- windows: new job with schannel, sspi, winidn, winldap, ssls-export

- unit3205: fix/silence remaining NULL dereferences.

Commits fixing the issues found:
cbbccb8b3aa357926131375e7082b2579fa3fe82 #16766
554e4c14bee82a604e08d51767f49fe11580e700 #16777

Closes #16764