Adding simple workflow

Author: klakegg

.github/workflows/maven.yaml

@@ -0,0 +1,34 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v4
+      with:
+        java-version: '8'
+        distribution: corretto
+
+    - name: Build with Maven
+      run: mvn clean package
+
+    - name: Upload artifact [uber-jar]
+      uses: actions/upload-artifact@v4
+      with:
+        name: uber-jar
+        path: target/*-jar-with-dependencies.jar
+        if-no-files-found: error
+        retention-days: 7