add a ci job

Author: noajshu

.github/ci.yml

@@ -0,0 +1,31 @@
+name: ci
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+defaults:
+  run:
+    shell: bash
+
+# Cancels a previous run if a new commit is made on the same pull request
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Bazel
+      uses: bazelbuild/setup-bazel@v3
+      with:
+        bazel-version: 'latest'
+
+    - name: Bazel tests
+      run: bazel test src:all