chore(*): auto-merge workflow 추가

.github/CODEOWNERS

@@ -1 +1 @@
-* @Doeunnkimm @semnil5202 @LeeJeongHooo @Andrevile
+* @Doeunnkimm @semnil5202 @LeeJeongHooo @Andrevile @sambad-adventure

.github/workflows/auto-merge.yml

@@ -0,0 +1,134 @@
+name: Auto Merge PR
+
+on:
+  pull_request_review:
+    types: [submitted]
+
+  pull_request:
+    types: [labeled, unlabeled]
+
+jobs:
+  auto-merge:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Check Labels
+        id: check-labels
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const labels = context.payload.pull_request.labels.map(label => label.name);
+            core.setOutput("no_auto_merge", labels.includes("no auto merge"));
+            core.setOutput("auto_merge", labels.includes("auto approve"));
+            core.setOutput("main_merge", labels.includes("main merge"));
+
+      - name: Set Environment Variables
+        run: |
+          echo "NO_AUTO_MERGE=${{ steps.check-labels.outputs.no_auto_merge }}" >> $GITHUB_ENV
+          echo "AUTO_MERGE=${{ steps.check-labels.outputs.auto_merge }}" >> $GITHUB_ENV
+          echo "MAIN_MERGE=${{ steps.check-labels.outputs.main_merge }}" >> $GITHUB_ENV
+
+      - name: Auto Approve if Auto Merge Label Exists
+        if: env.AUTO_MERGE == 'true' && env.NO_AUTO_MERGE == 'false'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            await github.rest.pulls.createReview({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number,
+              event: 'APPROVE',
+              body: '고생했다. 👍🏽'
+            });
+        env:
+          GITHUB_TOKEN: ${{ secrets.PUBLIC_ACCOUNT_TOKEN }}
+
+      - name: Merge Pull Request on Review
+        if: |
+          github.event_name == 'pull_request_review' &&
+          github.event.review.state == 'approved' &&
+          env.NO_AUTO_MERGE == 'false'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const targetBranch = process.env.MAIN_MERGE === 'true' ? 'main' : 'dev';
+            await github.rest.pulls.merge({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number,
+              merge_method: 'squash',
+              commit_title: `Merge pull request #${context.payload.pull_request.number} into ${targetBranch}`,
+              commit_message: 'Auto-merging PR',
+              sha: context.payload.pull_request.head.sha,
+              base: targetBranch
+            });
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Merge Pull Request on Label
+        if: |
+          github.event_name == 'pull_request' &&
+          github.event.action == 'labeled' &&
+          env.NO_AUTO_MERGE == 'false'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const { data: reviews } = await github.rest.pulls.listReviews({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number,
+            });
+
+            const approved = reviews.some(review => review.state === 'APPROVED');
+            const targetBranch = process.env.MAIN_MERGE === 'true' ? 'main' : 'dev';
+
+            if (approved) {
+              await github.rest.pulls.merge({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: context.payload.pull_request.number,
+                merge_method: 'squash',
+                commit_title: `Merge pull request #${context.payload.pull_request.number} into ${targetBranch}`,
+                commit_message: 'Auto-merging PR',
+                sha: context.payload.pull_request.head.sha,
+                base: targetBranch
+              });
+            }
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Merge Pull Request on Unlabel
+        if: |
+          github.event_name == 'pull_request' &&
+          github.event.action == 'unlabeled' &&
+          github.event.label.name == 'no auto merge'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const { data: reviews } = await github.rest.pulls.listReviews({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.payload.pull_request.number,
+            });
+
+            const approved = reviews.some(review => review.state === 'APPROVED');
+            const labels = context.payload.pull_request.labels.map(label => label.name);
+            const targetBranch = labels.includes("main merge") ? 'main' : 'dev';
+
+            if (approved) {
+              await github.rest.pulls.merge({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                pull_number: context.payload.pull_request.number,
+                merge_method: 'squash',
+                commit_title: `Merge pull request #${context.payload.pull_request.number} into ${targetBranch}`,
+                commit_message: 'Auto-merging PR',
+                sha: context.payload.pull_request.head.sha,
+                base: targetBranch
+              });
+            }
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}