ci: add build

Author: AlexProgrammerDE

.github/workflows/build.yml

@@ -0,0 +1,29 @@
+name: Build and upload jar
+
+on: [ push, pull_request ]
+
+jobs:
+  build:
+    # Only run on PRs if the source branch is on someone else's repo
+    if: "${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}"
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - name: Set up JDK 21
+        uses: actions/setup-java@v5
+        with:
+          java-version: 21
+          distribution: 'temurin'
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Upload a Build Artifact
+        uses: actions/upload-artifact@v5.0.0
+        with:
+          # Artifact name
+          name: MiniCommands
+          # A file, directory or wildcard pattern that describes what to upload
+          path: build/libs/*.jar