add auto adding labels for opened, reopened, ready_for_review PR based staging or main

Author: basfroman

.github/workflows/add-labels.yml

@@ -0,0 +1,16 @@
+name: Add Labels to PR
+
+on:
+  pull_request:
+    types: [opened, reopened, ready_for_review]
+
+jobs:
+  add-labels:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.base.ref == 'staging' || github.event.pull_request.base.ref == 'main'
+    steps:
+      - name: Add labels to PR
+        uses: actions-ecosystem/action-add-labels@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          labels: run-bittensor-sdk-tests, run-bittensor-cli-tests