feat: Add Gradle CI Pipeline

.github/workflows/BuildTest.yml

@@ -0,0 +1,34 @@
+name: A11
+
+on:
+  pull_request:
+  push:
+    branches:
+      - 'develop'
+      - 'master'
+
+jobs:
+  build:
+    name: "[CI] Check Gradle Build"
+    runs-on: ubuntu-latest
+    steps:
+      - name: (Set Up) checkout
+        uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.GIT_TOKEN }}
+          submodules: true
+
+      - name: Update Git submodules
+        run: git submodule update --remote --recursive
+
+      - name: (Set Up) Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: (Set Up) Grant Execute permission for gradlew
+        run: chmod 777 gradlew
+
+      - name: (Build) Build with Gradle
+        run: ./gradlew clean build -i