ci: Add a first draft of the CI cargo bloat tool

.github/workflows/bloat.yml

@@ -0,0 +1,18 @@
+name: Bloat size
+
+on:
+  push:
+    branches: [main]
+    tags: 'v*'
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  compute-size:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Run cargo bloat
+        uses: orf/cargo-bloat-action@v1
+        working-directory: examples/lakers-nrf52840
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}