new crate sc-light (#6235)

* sc-light

* remove unused deps

* fix line width

* move more fns to sc_light

substrate/client/service/test/Cargo.toml

@@ -20,6 +20,7 @@ log = "0.4.8"
 env_logger = "0.7.0"
 fdlimit = "0.1.4"
 parking_lot = "0.10.0"
+sc-light = { version = "2.0.0-rc3", path = "../../light" }
 sp-blockchain = { version = "2.0.0-rc3", path = "../../../primitives/blockchain" }
 sp-api = { version = "2.0.0-rc3", path = "../../../primitives/api" }
 sp-state-machine = { version = "0.8.0-rc3", path = "../../../primitives/state-machine" }

substrate/client/service/test/src/client/light.rs

@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-use sc_service::client::light::{
+use sc_light::{
 	call_executor::{
 		GenesisCallExecutor,
 		check_execution_proof,