ci: add GitHub Actions workflow for build and test automation

.github/workflows/main.yml

@@ -0,0 +1,52 @@
+name: Build and Test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+      with:
+        submodules: true
+
+    - name: Cache apt packages
+      uses: actions/cache@v3
+      with:
+        path: /var/cache/apt
+        key: ${{ runner.os }}-apt-${{ hashFiles('apt-packages.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-apt-
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y build-essential cmake
+
+    - name: Cache CMake
+      uses: actions/cache@v3
+      with:
+        path: ~/.cmake
+        key: ${{ runner.os }}-cmake-${{ hashFiles('CMakeLists.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-cmake-
+
+    - name: Configure and Build
+      run: |
+        mkdir -p build
+        cd build
+        cmake ..
+        make
+
+    - name: Run Unit Tests
+      run: |
+        cd build
+        ./tests/runTests