Add github CI config

.github/workflows/test.yml

@@ -0,0 +1,48 @@
+name: Test
+
+on: [ push, pull_request ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  actions: read
+  checks: write
+
+jobs:
+  build:
+    name: Build
+
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout the code
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'corretto'
+          java-version: 17
+          cache: 'gradle'
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v3
+
+      - name: Build
+        run: ./gradlew uberJar check
+
+      - name: Upload JAR
+        uses: actions/upload-artifact@v4
+        with:
+          name: seedvault-chunker-${{ github.sha }}-jar
+          path: |
+            app/build/libs/seedvault-chunker.jar
+
+      - name: Publish Test Report
+        uses: mikepenz/action-junit-report@v4
+        if: success() || failure()
+        with:
+          report_paths: '**/build/test-results/**/TEST-*.xml'
+