Add GitHub workflows

Author: danielctull

.github/workflows/lint.yml

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+name: Lint
+
+on:
+  pull_request:
+    paths:
+      - .github/workflows/lint.yml
+      - .swift-format
+      - "**/*.swift"
+  push:
+    paths:
+      - .github/workflows/lint.yml
+      - .swift-format
+      - "**/*.swift"
+
+jobs:
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    container:
+      image: swift:6.2
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Swift Version
+      run: swift --version
+    - name: Swift Format Lint
+      run: swift format lint -r .

.github/workflows/test.yml

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+name: Test
+
+on:
+  - push
+  - pull_request
+
+jobs:
+
+  linux:
+    strategy:
+      fail-fast: false
+      matrix:
+        image:
+          - "6.0"
+          - "6.1"
+          - "6.2"
+    name: Linux (Swift ${{ matrix.image }})
+    runs-on: ubuntu-latest
+    container:
+      image: swift:${{ matrix.image }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Swift Version
+      run: swift --version
+    - name: Swift Build
+      run: swift build -v -c debug
+    - name: Swift Test
+      run: swift test -v -c debug
+
+  macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        image:
+          - "15"
+    name: macOS ${{ matrix.image }}
+    runs-on: macos-${{ matrix.image }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Swift Version
+      run: swift --version
+    - name: Swift Build
+      run: swift build -v -c debug
+    - name: Swift Test
+      run: swift test -v -c debug