[U] Update github CI to use java 19, and gradlew with dependency cache

Author: hykilpikonna

.github/classroom/autograding.json

@@ -0,0 +1,41 @@
+name: Gradle Test CI
+
+on: [push]
+
+permissions:
+  checks: write
+  actions: read
+  contents: read
+
+jobs:
+  build:
+    name: Gradle Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Java JDK
+        uses: actions/setup-java@v3
+        with:
+          java-version: '19'
+          distribution: 'adopt'
+
+      - name: Gradle Wrapper Validation
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Setup Gradle with Dependency Cache
+        uses: gradle/[email protected]
+
+      - name: Gradle Build
+        run: ./gradlew build
+
+      - name: Gradle Test
+        run: ./gradlew test
+
+      - name: Publish Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: mcpm
+          path: build/libs
+
+