Function start_offchain_workers

pub fn start_offchain_workers(
    client: &Arc<ParachainClient>,
    parachain_config: &Configuration,
    keystore: Option<KeystorePtr>,
    backend: &Arc<TFullBackend<Block>>,
    transaction_pool: Option<OffchainTransactionPoolFactory<Block>>,
    network_provider: Arc<dyn NetworkProvider + Send + Sync>,
    task_manager: &TaskManager,
)