ci: add codeball review

Experimental!

.github/workflows/codeball.yml

@@ -0,0 +1,17 @@
+name: Codeball
+on: [pull_request]
+
+jobs:
+  codeball_job:
+    runs-on: ubuntu-latest
+    name: Codeball
+    steps:
+      # Run Codeball on all new Pull Requests 🚀
+      # For customizations and more documentation, see https://github.com/sturdy-dev/codeball-action
+      - name: Codeball
+        uses: sturdy-dev/codeball-action@v2
+        with:
+          approvePullRequests: "true"
+          labelPullRequestsWhenApproved: "true"
+          labelPullRequestsWhenReviewNeeded: "false"
+          failJobsWhenReviewNeeded: "false"