Add github actions

.github/workflows/github_actions.yml

@@ -0,0 +1,41 @@
+name: VRCX
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
+
+jobs:
+  build_dotnet:
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup Nuget.exe
+      uses: nuget/setup-nuget@v1
+    - name: Restore packages
+      run: nuget restore VRCX.sln
+    - name: Setup MSBuild.exe
+      uses: microsoft/setup-msbuild@v1.0.2
+    - name: Build with MSBuild
+      run: msbuild VRCX.sln -p:Configuration=Release -p:Platform=x64
+     
+  build_node:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: html
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: Restore dependencies
+      run: npm ci
+    - name: Build
+      run: npm run production