Add new workflow to label prs with needs_triage (#1045) (#1048)

This is a backport of PR #1045 as merged into main (9cfa903).
SUMMARY
This pr adds a new workflow for labeling new and reopened prs that are not marked as draft. The needs_triage label will be removed if the pr is marked as draft during development and re-added once the pr is marked as ready for review.
After consulting with the team, we decided to label prs in a new workflow to allow for the prs and issues to have different labels in the future.
ACA-2362
ISSUE TYPE

Feature Pull Request

COMPONENT NAME
github workflow
Reported CI Issues
Sanity tests: #1046

Reviewed-by: Bianca Henderson <beeankha@gmail.com>

.github/workflows/label-new-prs.yaml

@@ -0,0 +1,27 @@
+---
+name: label new prs
+on:
+  pull_request_target:
+    types:
+      - opened
+      - reopened
+      - converted_to_draft
+      - ready_for_review
+
+jobs:
+  add_label:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Add 'needs_triage' label if the pr is not a draft
+        uses: actions-ecosystem/action-add-labels@v1
+        if: github.event.pull_request.draft == false
+        with:
+          labels: needs_triage
+
+      - name: Remove 'needs_triage' label if the pr is a draft
+        uses: actions-ecosystem/action-remove-labels@v1
+        if: github.event.pull_request.draft == true
+        with:
+          labels: needs_triage