Add Github Workflow to build & store artifacts

.github/workflows/build.yml

@@ -0,0 +1,30 @@
+name: Java CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: build test
+
+      - name: Upload build jars
+        uses: actions/upload-artifact@v3
+        with:
+          name: jars
+          path: build/libs/