Add binary with core

Author: pguyot

.github/workflows/build-and-test.yaml

@@ -457,4 +457,7 @@ jobs:
       if: ${{ failure() }}  # Run only if something went wrong
       with:
          name: cores-${{ github.run_id }}-${{ github.run_attempt }}
-         path: /cores
+         path: |
+            /cores
+            build/src/AtomVM
+         retention-days: 5