Add GitHub Actions

Author: RLovelett

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+---
+name: Continuous Integration (CI)
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_12.app/Contents/Developer
+    runs-on: macos-10.15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Install libssh Dependency
+        run: brew install libssh
+      - name: Build (Debug)
+        run: swift build
+      - name: Build (Release)
+        run: swift build -c release
+  test:
+    env:
+      DEVELOPER_DIR: /Applications/Xcode_12.2.app/Contents/Developer
+    runs-on: macos-10.15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Install libssh Dependency
+        run: brew install libssh
+      - name: Test
+        run: swift test