Separate ParachainId injection to its own pallet (#183)

* Separate paraid injection to own pallet

* Move token dealer to a crate

* Move to rococo-parachains

* Remove parameter_types hack

* Fix chainspec

* fix build

* remove commented code

* Update contracts runtime to match other runtime

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Alphebetize workspace members

* Parachain info to own crate

* prune system = frame_system

Co-authored-by: Ricardo Rius <ricardo@parity.io>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

cumulus/rococo-parachains/src/chain_spec.rs

@@ -17,7 +17,7 @@
 use cumulus_primitives::ParaId;
 use parachain_runtime::{
 	AccountId, BalancesConfig, GenesisConfig, Signature, SudoConfig, SystemConfig,
-	TokenDealerConfig, WASM_BINARY,
+	ParachainInfoConfig, WASM_BINARY,
 };
 use sc_chain_spec::{ChainSpecExtension, ChainSpecGroup};
 use sc_service::ChainType;
@@ -140,7 +140,7 @@ fn testnet_genesis(
 				.collect(),
 		}),
 		pallet_sudo: Some(SudoConfig { key: root_key }),
-		message_example: Some(TokenDealerConfig { parachain_id: id }),
+		parachain_info: Some(ParachainInfoConfig { parachain_id: id }),
 		// TODO: add contracts genesis for the contracts runtime
 		// pallet_contracts: Some(parachain_runtime::ContractsConfig { current_schedule: Default::default() }),
 	}