Add WeightInfo to all pallets with benchmarks. (#6575)

* Start adding weight info

* More weightinfo

* finish weight info

* more fixes

* inital update of node runtime

* fix the rest of the compilation

* update balances

* add docs

* fix balances tests

* Fix more tests

* Fix compile

* Fix pallet-evm tests

substrate/frame/offences/src/mock.rs

@@ -120,6 +120,7 @@ impl frame_system::Trait for Runtime {
 	type AccountData = ();
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
+	type SystemWeightInfo = ();
 }
 
 parameter_types! {
@@ -131,6 +132,7 @@ impl Trait for Runtime {
 	type IdentificationTuple = u64;
 	type OnOffenceHandler = OnOffenceHandler;
 	type WeightSoftLimit = OffencesWeightSoftLimit;
+	type WeightInfo = ();
 }
 
 mod offences {