Add test CI

Author: SIMULATAN

.github/workflows/tests.yml

@@ -0,0 +1,27 @@
+name: Test
+on:
+  - pull_request
+  - push
+jobs:
+  test:
+    name: Build and run Tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+      - name: Set up JDK 21
+        uses: actions/setup-java@v3
+        with:
+          java-version: 21
+          distribution: temurin
+      - name: Setup gradle
+        uses: gradle/actions/setup-gradle@v3
+      - name: Run tests
+        run: ./gradlew check
+      - name: Upload Test Report
+        uses: actions/upload-artifact@v3
+        if: always() # always run even if the previous step fails
+        with:
+          name: junit-test-results
+          path: '**/build/test-results/test/TEST-*.xml'
+          retention-days: 1