Add VS2019 configuration to Github CI

.github/workflows/main.yml

@@ -11,6 +11,11 @@ jobs:
     runs-on: [windows-latest]
 
     steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
+
     - name: Build and run
       run: |
         cmake.exe --help
@@ -21,10 +26,7 @@ jobs:
 #      run: ./test/etl_tests
 
 #    steps:
-#    - name: Checkout
-#      uses: actions/checkout@v2
-#      with:
-#        submodules: recursive
+
 
 #    - name: Add msbuild to PATH
 #      uses: microsoft/setup-msbuild@v1.0.1