Add GitHub workflow for CI

Signed-off-by: Jacob Perron <jacobmperron@gmail.com>

.github/workflows/ci.yaml

@@ -0,0 +1,41 @@
+name: Build and test
+on:
+  # Run for any commit in origin repository
+  push:
+  # And pull requests from forks
+  pull_request:
+    branches:
+      # This avoids running the job twice for PRs from origin repository
+    - '**:**'
+
+env:
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-18.04, ubuntu-20.04]
+
+    steps:
+    - name: Install dependencies
+      run: |
+        sudo apt install build-essential cmake git libboost-system-dev libboost-thread-dev
+        git clone https://github.com/google/googletest.git
+        cd googletest
+        cmake CMakeLists.txt
+        make
+        sudo make install
+
+    - uses: actions/checkout@v2
+
+    - name: Configure CMake
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DCMAKE_CXX_FLAGS="-Werror"
+
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+
+    - name: Test
+      working-directory: ${{github.workspace}}/build
+      run: ctest -C ${{env.BUILD_TYPE}}