feat: add usable workflow for FE request reviewers

Author: zhusee2

.github/workflows/fe_assign_pr_reviewer.yml

@@ -0,0 +1,34 @@
+name: Request PR reviewers for FE team
+
+on:
+  workflow_call:
+    secrets:
+      search_pr_token:
+        required: true
+      GITHUB_TOKEN:
+        required: true
+
+jobs:
+  add-reviews:
+    timeout-minutes: 5
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      # For human-created PRs
+      - uses: iCHEF/action-request-review@v3
+        if: ${{ !startsWith(github.actor, 'dependabot') && !contains(github.actor, '[bot]') }}
+        with:
+          token: ${{ secrets.search_pr_token }}
+          config_gist_id: 91ffd6e7318cdf5a02353af0a15e2bcf
+
+      # For bot-created PRs
+      - env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        if: ${{ contains(github.actor, '[bot]') }}
+        run: |
+          gh api \
+            /repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/requested_reviewers \
+            --method POST \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            -f "team_reviewers[]=frontend"