Don't require module name in inherents (#6576)

* Start

* Cleanup `construct_runtime!`

* Add tests

* Fix after merge

* Update the docs

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

@@ -268,7 +268,7 @@ construct_runtime!(
 		System: system::{Module, Call, Config, Storage, Event<T>},
 		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Call, Storage},
 		Timestamp: timestamp::{Module, Call, Storage, Inherent},
-		Aura: aura::{Module, Config<T>, Inherent(Timestamp)},
+		Aura: aura::{Module, Config<T>, Inherent},
 		Grandpa: grandpa::{Module, Call, Storage, Config, Event},
 		Balances: balances::{Module, Call, Storage, Config<T>, Event<T>},
 		TransactionPayment: transaction_payment::{Module, Storage},