Offences report system rework (#13425)

* Experiments with common equivocation trait

* Improved equivocation trait

* Fix grandpa equivocation implementation

* Remove some cruft

* Remove some more cruft

* More generic naming

* Simplification of offences manipilation

* More refactory

* Some prograss with the encapsulation of offence report system

* Finally unit type works as a universal null report system

* Align substrate node code

* Further simplification

* Fix test utils

* Remove not required associated type

* Fix benches

* Rollback to prev field name

* Box big params

* Fix typo

* Remove new tag computation

* Remove default implementations

* Better docs

* Return 'Result' instead of bool

* Change offence report system return types

* Some renaming and documentation

* Improve documentation

* More abstract offence report system

* Rename 'consume_evidence' to 'process_evidence'

* Further docs refinements

* Doc for dummy offence report

* Fix rustdoc

* Fix after master merge

* Apply code review suggestions

* Improve docs

substrate/frame/grandpa/src/mock.rs

@@ -225,22 +225,14 @@ parameter_types! {
 impl Config for Test {
 	type RuntimeEvent = RuntimeEvent;
 
-	type KeyOwnerProofSystem = Historical;
-
-	type KeyOwnerProof =
-		<Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(KeyTypeId, AuthorityId)>>::Proof;
-
-	type KeyOwnerIdentification = <Self::KeyOwnerProofSystem as KeyOwnerProofSystem<(
-		KeyTypeId,
-		AuthorityId,
-	)>>::IdentificationTuple;
-
-	type HandleEquivocation =
-		super::EquivocationHandler<Self::KeyOwnerIdentification, Offences, ReportLongevity>;
-
 	type WeightInfo = ();
 	type MaxAuthorities = ConstU32<100>;
 	type MaxSetIdSessionEntries = MaxSetIdSessionEntries;
+
+	type KeyOwnerProof = <Historical as KeyOwnerProofSystem<(KeyTypeId, AuthorityId)>>::Proof;
+
+	type EquivocationReportSystem =
+		super::EquivocationReportSystem<Self, Offences, Historical, ReportLongevity>;
 }
 
 pub fn grandpa_log(log: ConsensusLog<u64>) -> DigestItem {