Create auto_author_assign.yml (#6696)

.github/workflows/auto_author_assign.yml

@@ -0,0 +1,15 @@
+# https://github.com/marketplace/actions/auto-author-assign
+name: 'Auto Author Assign'
+
+on:
+  pull_request_target:
+    types: [opened, reopened]
+
+permissions:
+  pull-requests: write
+
+jobs:
+  assign-author:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: toshimaru/auto-author-assign@v1.6.2