Support custom genesis block (#12291)

* Set genesis block data using the built genesis block

* Make resolve_state_version_from_wasm a separate function and some small refactorings

Useful for the commit following.

* Introduce trait BuildGenesisBlock

Substrate users can use this trait to implement their custom genesis block when constructing the
client.

* Make call_executor test compile

* cargo +nightly fmt --all

* Fix test

* Remove unnecessary clone

* FMT

* Apply review suggestions

* Revert changes to new_full_client() and new_full_parts() signature

* Remove needless `Block` type in `resolve_state_version_from_wasm`

substrate/bin/node/testing/src/bench.rs

@@ -397,24 +397,34 @@ impl BenchDb {
 		let task_executor = TaskExecutor::new();
 
 		let backend = sc_service::new_db_backend(db_config).expect("Should not fail");
+		let executor = NativeElseWasmExecutor::new(
+			WasmExecutionMethod::Compiled {
+				instantiation_strategy: WasmtimeInstantiationStrategy::PoolingCopyOnWrite,
+			},
+			None,
+			8,
+			2,
+		);
+		let client_config = sc_service::ClientConfig::default();
+		let genesis_block_builder = sc_service::GenesisBlockBuilder::new(
+			&keyring.generate_genesis(),
+			!client_config.no_genesis,
+			backend.clone(),
+			executor.clone(),
+		)
+		.expect("Failed to create genesis block builder");
+
 		let client = sc_service::new_client(
 			backend.clone(),
-			NativeElseWasmExecutor::new(
-				WasmExecutionMethod::Compiled {
-					instantiation_strategy: WasmtimeInstantiationStrategy::PoolingCopyOnWrite,
-				},
-				None,
-				8,
-				2,
-			),
-			&keyring.generate_genesis(),
+			executor,
+			genesis_block_builder,
 			None,
 			None,
 			ExecutionExtensions::new(profile.into_execution_strategies(), None, None),
 			Box::new(task_executor.clone()),
 			None,
 			None,
-			Default::default(),
+			client_config,
 		)
 		.expect("Should not fail");