report size deltas on PRs

Author: runger1101001

.github/workflows/report-size-deltas.yml

@@ -0,0 +1,10 @@
+on:
+  schedule:
+    - cron: "*/5 * * * *"
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: arduino/report-size-deltas@v1
+        with:
+          sketches-reports-source: ^sketches-report-.+