Add basic GitHub Actions CI

Author: BenBrock

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: "CI"
+
+on:
+  push:
+    branches:
+      - main
+
+  pull_request:
+
+jobs:
+  checks:
+    runs-on: 'ubuntu-latest'
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.12'
+        cache: 'pip'
+    - run: pip install -r requirements.txt
+    - name: Checks
+      uses: pre-commit/[email protected]
+
+  gcc:
+    runs-on: 'ubuntu-latest'
+    strategy:
+      matrix:
+        cxx: [gcc, clang]
+    name: ${{ matrix.cxx }}
+    env:
+      CXX: ${{ matrix.cxx }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: CMake
+      run: cmake -B build
+    - name: Build
+      run: make -C build -j `nproc`
+    - name: Test
+      run: ctest build/test/bash