Reduce warning verbosity

Author: Kryptos-FR

.github/workflows/build-windows.yml

@@ -36,4 +36,4 @@ jobs:
         with:
           msbuild-architecture: x64
       - name: Build Stride
-        run: msbuild build\Stride.build -t:BuildWindows -m:1 -nr:false -v:m -p:Configuration=${{ github.event.inputs.build-type || inputs.build-type }} -p:StrideSkipUnitTests=true -p:StrideSkipAutoPack=true
+        run: msbuild build\Stride.build -t:BuildWindows -m:1 -nr:false -v:m -p:Configuration=${{ github.event.inputs.build-type || inputs.build-type }} -p:WarningLevel=0 -p:StrideSkipUnitTests=true -p:StrideSkipAutoPack=true