feat: auto assigner

Author: lee-ji-hoon

.github/workflows/pr-actions.yml

@@ -0,0 +1,21 @@
+name: PR Actions
+
+on:
+  pull_request:
+    types: [opened, reopened]
+
+jobs:
+  assign-pr-owner:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: peter-evans/find-comment@v1
+        id: find-comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: ${{ github.actor }}
+          body-includes: "#"
+      - name: Assign PR owner
+        uses: peter-evans/assignee@v2
+        with:
+          assignee: ${{ github.actor }}