* service builder: fix todo about jsonrpc Option workaround
* grandpa-rpc: only share executor instead of sub manager
* grandpa-rpc: fix compilation
* grandpa-rpc: rename to subscription_executor
* node/cli: remove another unused jsonrpc dependency
* grandpa: apply style fixes from code review
Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>