Added a CI and dependabot configuration

.github/dependabot.yml

@@ -0,0 +1,15 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "swift"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: Continuous Integration
+
+on:
+  workflow_dispatch:
+  push:
+
+jobs:
+  build-release:
+    strategy:
+      matrix:
+        # https://github.com/actions/virtual-environments
+        os: [macos-12, ubuntu-20.04]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: fwal/setup-swift@v2
+      - name: Echo Swift version
+        run: swift --version
+      - name: Check a Release build
+        run: swift build --disable-automatic-resolution -c release
+
+  run-tests:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: fwal/setup-swift@v2
+      - name: Echo Swift version
+        run: swift --version
+      - name: Run tests
+        run: swift test