Adds sponsor labeler

.github/workflows/label-sponsors.yml

@@ -0,0 +1,14 @@
+name: Label sponsors
+on:
+    pull_request:
+        types: [opened]
+    issues:
+        types: [opened]
+jobs:
+    build:
+        name: is-sponsor-label
+        runs-on: ubuntu-latest
+        steps:
+            - uses: JasonEtco/is-sponsor-label-action@v1.1.3
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}