build: use single action to validate mac and windows

.github/workflows/validate-master.yml

@@ -0,0 +1,45 @@
+name: Validate Master
+
+on:
+  push:
+    branches: [ "master" ]
+
+jobs:
+  test-windows:
+
+    runs-on: windows-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ci
+    - run: npm run build
+    - run: npm test --browsers=Chrome,Edge,Firefox
+
+  test-macos:
+
+    runs-on: macos-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x]
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ci
+    - run: npm run build
+    - run: npm test --browsers=Chrome,Safari