contracts: Expose environment types for offchain tooling (#14750)

* Expose environment types for offchain tooling

* Use EnvironmentType wrapper

* Add type impl to test config

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Co-authored-by: parity-processbot <>

substrate/bin/node/runtime/src/lib.rs

@@ -1265,6 +1265,7 @@ impl pallet_contracts::Config for Runtime {
 	type CodeHashLockupDepositPercent = CodeHashLockupDepositPercent;
 	#[cfg(feature = "unsafe-debug")]
 	type Debug = ();
+	type Environment = ();
 }
 
 impl pallet_sudo::Config for Runtime {