build: add an action for handling feature requests (#24306)

Add feature request voting process github actions to the repo.

(cherry picked from commit 31f8ae9)

Author: josephperrott

.github/workflows/feature-requests.yml

@@ -0,0 +1,15 @@
+name: Feature request triage bot
+
+on:
+  schedule:
+    # Run at 15:00 every day
+    - cron: '0 15 * * *'
+
+jobs:
+  feature_triage:
+    if: github.repository == 'angular/components'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: angular/dev-infra/github-actions/feature-request@8298e121c51960857ef39abc16b743775ff6be68
+        with:
+          angular-robot-key: ${{ secrets.ANGULAR_ROBOT_PRIVATE_KEY }}