Add VS2019 build using GitHub workflow (#4)

* Add VS2019 build using GitHub workflow

* Add Win32 build

.github/workflows/build.yaml

@@ -0,0 +1,29 @@
+name: Build
+on: [push]
+jobs:
+  build:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        platform: ["Win32", "x64"]
+    steps:
+      - name: Set up Git repository
+        uses: actions/checkout@v2
+      - uses: ilammy/msvc-dev-cmd@v1
+        with:
+          sdk: "8.1"
+          toolset: "14.16"
+      - name: premake
+        run: |
+          $env:Path = "C:\msys64\usr\bin;$env:Path"
+          wget https://github.com/premake/premake-core/releases/download/v5.0.0-alpha15/premake-5.0.0-alpha15-windows.zip
+          unzip premake-5.0.0-alpha15-windows.zip
+          ./premake5.exe vs2019
+      - name: Execute MSBuild
+        run: |
+          cd .build/vs2019
+          MSBuild /nologo /property:Configuration=release /p:Platform=${{ matrix.platform }} clink.sln
+      - uses: actions/upload-artifact@v2
+        with:
+          name: release
+          path: .build/vs2019/bin/release