Bug 1774225 - Allow color diagnostics in clang-cl builds. r=firefox-build-system-reviewers,andi

Differential Revision: https://phabricator.services.mozilla.com/D149272

build/moz.configure/toolchain.configure

@@ -1863,7 +1863,7 @@ def color_cflags(info):
     # before adding flags to return values.
     if info.type == "gcc":
         return "-fdiagnostics-color"
-    elif info.type == "clang":
+    elif info.type in ["clang", "clang-cl"]:
         return "-fcolor-diagnostics"
     else:
         return ""