chore: 릴리즈 태그 관련 워크플로 설정

.github/CODEOWNERS

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+@cchuyong

.github/workflows/release.yml

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+name: 릴리즈 태그 만들기
+on:
+  pull_request:
+    branches:
+      - main
+    types: [ closed ]
+jobs:
+  create-tag:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 브랜치 가져오기
+        uses: actions/checkout@v2
+
+      - name: 브랜치명 추출하기
+        id: branch-name
+        uses: tj-actions/[email protected]
+
+      - name: 버전 정보 추출
+        run: echo "TAG=$(echo '${{ steps.branch-name.outputs.current_branch }}' | egrep -o '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}')" >> $GITHUB_ENV
+        id: extract_version_name
+
+      - name: Release 생성
+        if: github.event.pull_request.merged == true
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ env.TAG }}
+          release_name: ${{ env.TAG }}