Modified the testing workflow to compile the out of process

COM-server and register it.

.github/workflows/autotest.yml

@@ -25,6 +25,21 @@ jobs:
           python setup.py install
           pip uninstall comtypes -y
           python test_pip_install.py
+      - name: Set up MSBuild
+        uses: microsoft/setup-msbuild@v2
+      - name: Build out of process COM-server for testing
+        run: |
+          cd $GITHUB_WORKSPACE/source/OutProcSrv
+          nmake /f Makefile
+      - name: Register COM Server
+        run: |
+          server.exe /RegServer
+          cd $GITHUB_WORKSPACE
       - name: unittest comtypes
         run: |
           python -m unittest discover -v -s ./comtypes/test -t comtypes\test
+      - name: Unregister COM Server
+        run: |
+          cd $GITHUB_WORKSPACE/source/OutProcSrv
+          server.exe /UnregServer
+          cd $GITHUB_WORKSPACE