BREAKING: Rename Call & Event (#11981)

* rename Event to RuntimeEvent

* rename Call

* rename in runtimes

* small fix

* rename Event

* small fix & rename RuntimeCall back to Call for now

* small fixes

* more renaming

* a bit more renaming

* fmt

* small fix

* commit

* prep for renaming associated types

* fix

* rename associated Event type

* rename to RuntimeEvent

* commit

* merge conflict fixes & fmt

* additional renaming

* fix.

* fix decl_event

* rename in tests

* remove warnings

* remove accidental rename

* .

* commit

* update .stderr

* fix in test

* update .stderr

* TRYBUILD=overwrite

* docs

* fmt

* small change in docs

* rename PalletEvent to Event

* rename Call to RuntimeCall

* renamed at wrong places :P

* rename Call

* rename

* rename associated type

* fix

* fix & fmt

* commit

* frame-support-test

* passing tests

* update docs

* rustdoc fix

* update .stderr

* wrong code in docs

* merge fix

* fix in error message

* update .stderr

* docs & error message

* .

* merge fix

* merge fix

* fmt

* fmt

* merge fix

* more fixing

* fmt

* remove unused

* fmt

* fix

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/docs/Upgrading-2.0-to-3.0.md

@@ -148,7 +148,7 @@ And update the overall definition for weights on frame and a few related types a
 +	type BlockLength = RuntimeBlockLength;
 +	type DbWeight = RocksDbWeight;
  	type Origin = Origin;
- 	type Call = Call;
+ 	type RuntimeCall = RuntimeCall;
  	type Index = Index;
 @@ -171,25 +198,19 @@ impl frame_system::Trait for Runtime {
  	type Header = generic::Header<BlockNumber, BlakeTwo256>;