[#24] PR 자동 생성 GitHub Actions를 추가한다

.github/workflows/create-pr.yaml

@@ -0,0 +1,45 @@
+name: Auto Create or Update PR
+
+on:
+  push:
+    branches:
+      [
+        feature/*,
+        release/*,
+        bugfix/*,
+        hotfix/*,
+        refactor/*,
+        test/*,
+        docs/*,
+        chore/*,
+      ]
+
+jobs:
+  auto_pr:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Create or Update PR
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          # 현재 브랜치 이름 가져오기
+          CURRENT_BRANCH=$(echo $GITHUB_REF | sed 's|refs/heads/||')
+          echo "Current branch: $CURRENT_BRANCH"
+
+          # 기존 PR이 있는지 확인
+          EXISTING_PR=$(gh pr list --head "$CURRENT_BRANCH" --json number -q ".[0].number")
+
+          if [ -z "$EXISTING_PR" ]; then
+            echo "No existing PR. Creating a new one..."
+            gh pr create \
+              --title "Auto PR for $CURRENT_BRANCH" \
+              --body "This PR was automatically created for the branch $CURRENT_BRANCH." \
+              --base main
+          else
+            echo "PR #$EXISTING_PR exists. Syncing with the latest changes..."
+            gh pr comment "$EXISTING_PR" --body "Branch updated with new changes."
+          fi