GHA: Add a build sanity check in CI

Add a build check job in the sanity checks workflow.

.github/workflows/sanity.yml

@@ -0,0 +1,21 @@
+name: Sanity checks
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: 
+      - ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        run: |
+          cargo install cbindgen
+      - name: Build
+        run: |
+          make build