Shomei Linea state manager extends the Hyperledger Besu functionality. This component communicates with Besu in order to maintain and update the ZK state. This component will communicate with Besu thanks to this plugin https://github.com/ConsenSys/besu-shomei-plugin
Description
As an Linea Operator, I want to be able to easily monitor shomei sync status.
Acceptance Criteria
Explose shomei metric to follow head. This metric will be similar to besu metric ethereum_blockchain_height