workflows: automatically label ecosystems issues and PRs (#2254)

.github/workflows/ecosystems-label.yml

@@ -0,0 +1,22 @@
+name: Label APM Ecosystems issues
+on:
+  issues:
+    types:
+      - reopened
+      - opened
+      - edited
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - edited
+jobs:
+  label_issues:
+    if: contains(github.event.pull_request.title, 'contrib')
+    runs-on: ubuntu-latest
+    steps:
+      # https://github.com/marketplace/actions/actions-ecosystem-add-labels
+      - name: add label
+        uses: actions-ecosystem/action-add-labels@v1
+        with:
+          labels: apm:ecosystem