Create swift.yml

.github/workflows/swift.yml

@@ -0,0 +1,23 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup Xcode version
+      uses: maxim-lobanov/[email protected]
+      with:
+        xcode-version: latest-stable
+    - name: Build
+      run: swift build -v
+    - name: Run tests
+      run: swift test -v