Migrate support Probot to support GitHub Action

I'm pretty sure I'm doing this right...

Author: timdorr

.github/support.yml

@@ -0,0 +1,22 @@
+name: 'Support Requests'
+
+on:
+  issues:
+    types: [labeled, unlabeled, reopened]
+
+permissions:
+  issues: write
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/support-requests@v2
+        with:
+          issue-comment: >
+            :wave: @{issue-author}, we use the issue tracker exclusively for bug reports
+            and feature requests. However, this issue appears to be a support request.
+            For usage questions, please use [Stack Overflow](https://stackoverflow.com/questions/tagged/react-router)
+            or [Reactiflux](https://discord.gg/6RyV8n8yyM) where there are a lot more people ready to help you out.
+
+            Please feel free to clarify your issue if you think it was closed prematurely.