feat: Add unit test check to PR workflows

.github/workflows/pr_unit_test.yaml

@@ -0,0 +1,27 @@
+name: pr_unit_test
+on:
+    pull_request:
+        branches:
+            - main
+        types: [opened, reopened, synchronize]
+
+jobs:
+    ktlint:
+        runs-on: ubuntu-latest
+        name: Run unit tests
+
+        steps:
+            - name: Checkout repository
+              uses: actions/checkout@v4
+
+            - name: Setup JDK environment
+              uses: actions/setup-java@v4
+              with:
+                  distribution: "zulu"
+                  java-version: 17
+
+            - name: Setup Gradle
+              uses: gradle/actions/setup-gradle@v4
+
+            - name: Run tests
+              run: ./gradlew test