ci(github): add workflow auto-assign.yml

Signed-off-by: Mark <remarkablemark@users.noreply.github.com>

Author: remarkablemark

.github/workflows/auto-assign.yml

@@ -0,0 +1,13 @@
+name: auto-assign
+on: pull_request_target
+
+jobs:
+  auto-assign:
+    runs-on: ubuntu-latest
+    if: github.actor != 'dependabot[bot]' && github.event.action == 'opened
+
+    steps:
+    - name: Auto assign
+      run: gh pr edit ${{ github.event.pull_request.html_url }} --add-assignee ${{ github.event.pull_request.user.login }} --add-reviewer remarkablemark
+      env:
+        GITHUB_TOKEN: ${{ github.token }}