[YS-49] chore: CI 스크립트 작성 및 PR 오토 템플릿 추가 (#7)

* feat: add ci script

* feat: add pr auto template script

* style: update comment content

.github/workflows/ci-backend.yml

@@ -0,0 +1,30 @@
+name: Java CI with Gradle
+
+on:
+  push:
+    branches:
+      - main
+      - dev
+  pull_request:
+    branches:
+      - main
+      - dev
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build with Gradle
+        run: ./gradlew clean build

.github/workflows/pr-auto-template.yml

@@ -0,0 +1,22 @@
+name: "Pull Request 오토 템플릿 추가"
+on:
+  pull_request:
+    branches:
+      - dev
+
+jobs:
+  update_pr_templates:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: tzkhan/pr-update-action@v2 # https://github.com/tzkhan/pr-update-action
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          base-branch-regex: 'dev'
+          head-branch-regex: 'ys-\d+' # Branch에서 Ticket Regex
+          title-template: '[%headbranch%] ' # PR Title Prefix 템플릿 (티켓 번호) (ex: [YS-1234] ~ )
+          body-template: | # PR Body suffix 템플릿 (지라 링크)
+            ## 🔗 Jira 티켓
+
+            ---
+            https://yappsocks.atlassian.net/browse/%headbranch%
+          body-update-action: 'suffix'