fix: add actions

Author: jeremylong

.github/workflows/build.yaml

@@ -0,0 +1,26 @@
+name: Java CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    - name: Run build
+      run: |
+        mvn install
+
+