Add build actions

.github/CODEOWNERS

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+* @kit-sdq/programming-lecture

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+      time: "11:00"
+      timezone: "Europe/Berlin"
+    commit-message:
+      prefix: "Dependency"
+      include: "scope"
+  - package-ecosystem: "maven"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+      time: "11:00"
+      timezone: "Europe/Berlin"
+    commit-message:
+      prefix: "Dependency"
+      include: "scope"

.github/workflows/release.yml

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+name: Artemis Score Stats (Release)
+
+on:
+  push:
+    tags: "v**"
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: "Create release for new version"
+    runs-on: macos-latest
+
+    steps:
+    - uses: actions/[email protected]
+      with:
+        submodules: true
+
+    - name: Set up JDK
+      uses: actions/setup-java@v3
+      with:
+        distribution: 'temurin'
+        java-version: 17
+
+    - name: Build Artemis4J
+      shell: bash
+      working-directory: "artemis4j"
+      run: mvn clean install -DskipTests
+
+    - name: Build with Maven
+      run: mvn -B clean package
+
+    - name: GitHub Release
+      uses: softprops/action-gh-release@v1
+      if: startsWith(github.ref, 'refs/tags/v')
+      with:
+        files: |
+          target/artemis-score-stats-complete.jar

.github/workflows/stale.yml

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+name: Stale PRs
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "1 12 * * *"
+
+jobs:
+  stale:
+    if: github.repository_owner == 'kit-sdq'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check for stale PRs
+        uses: actions/stale@v8
+        with:
+          days-before-stale: 7
+          days-before-close: 14
+          days-before-issue-stale: -1
+          remove-stale-when-updated: true
+          stale-pr-label: "stale"
+          exempt-pr-labels: "no-stale"
+          stale-pr-message: 'This PR is stale because it has been open 7 days with no activity. Remove stale label or comment or this will be closed in 7 days.'
+          close-pr-message: 'This PR was closed because it has been stalled for 14 days with no activity.'

.github/workflows/verify.yml

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+name: Artemis Score Stats (PRs & Main Branch)
+
+on:
+  push:
+    branches: [ main ]
+    paths-ignore:
+      - '**.md'
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: "Full build"
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/[email protected]
+      with:
+        submodules: true
+
+    - name: Set up JDK
+      uses: actions/setup-java@v3
+      with:
+        distribution: 'temurin'
+        java-version: 17
+
+    - name: Cache Maven packages
+      uses: actions/cache@v3
+      with:
+        path: ~/.m2/repository
+        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: ${{ runner.os }}-maven-
+
+    - name: Build Artemis4J
+      shell: bash
+      working-directory: "artemis4j"
+      run: mvn -U clean install -DskipTests
+
+    - name: Cache Distributions
+      uses: actions/cache@v3
+      with:
+        path: ./dist
+        key: cache-dist-${{github.run_id}}
+
+    - name: Verify with Maven
+      run: mvn -B clean verify
+
+    - name: Build with Maven
+      run: mvn -B clean package -DskipTests
+
+    - name: Save Final JAR
+      uses: actions/upload-artifact@v3
+      with:
+        name: "JAR File"
+        path: "target/artemis-score-stats-complete.jar"