CI/CD: Add OpenWatcom

.github/workflows/watcom.yml

@@ -1,6 +1,6 @@
 # Copyright (C) The c-ares project and its contributors
 # SPDX-License-Identifier: MIT
-name: watcom
+name: OpenWatcom
 on:
   push:
     branches:
@@ -18,6 +18,7 @@ jobs:
           fetch-depth: 0
       - name: configure
         run: |
+          dir
           buildconf.bat
       - name: Build c-ares
         run: |