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/frame/support/test/tests/pallet_ui/event_field_not_member.rs

@@ -6,7 +6,7 @@ mod pallet {
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
 		type Bar;
-		type Event: IsType<<Self as frame_system::Config>::Event> + From<Event<Self>>;
+		type RuntimeEvent: IsType<<Self as frame_system::Config>::RuntimeEvent> + From<Event<Self>>;
 	}
 
 	#[pallet::pallet]

substrate/frame/support/test/tests/pallet_ui/event_not_in_trait.stderr

@@ -1,4 +1,4 @@
-error: Invalid usage of Event, `Config` contains no associated type `Event`, but enum `Event` is declared (in use of `#[pallet::event]`). An Event associated type must be declare on trait `Config`.
+error: Invalid usage of RuntimeEvent, `Config` contains no associated type `RuntimeEvent`, but enum `Event` is declared (in use of `#[pallet::event]`). An RuntimeEvent associated type must be declare on trait `Config`.
  --> $DIR/event_not_in_trait.rs:1:1
   |
 1 | #[frame_support::pallet]

substrate/frame/support/test/tests/pallet_ui/event_type_invalid_bound.rs

@@ -6,7 +6,7 @@ mod pallet {
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
 		type Bar;
-		type Event;
+		type RuntimeEvent;
 	}
 
 	#[pallet::pallet]

substrate/frame/support/test/tests/pallet_ui/event_type_invalid_bound.stderr

@@ -1,5 +1,5 @@
-error: Invalid `type Event`, associated type `Event` is reserved and must bound: `IsType<<Self as frame_system::Config>::Event>`
+error: Invalid `type RuntimeEvent`, associated type `RuntimeEvent` is reserved and must bound: `IsType<<Self as frame_system::Config>::RuntimeEvent>`
  --> $DIR/event_type_invalid_bound.rs:9:3
   |
-9 |         type Event;
+9 |         type RuntimeEvent;
   |         ^^^^

substrate/frame/support/test/tests/pallet_ui/event_type_invalid_bound_2.rs

@@ -6,7 +6,7 @@ mod pallet {
 	#[pallet::config]
 	pub trait Config: frame_system::Config {
 		type Bar;
-		type Event: IsType<<Self as frame_system::Config>::Event>;
+		type RuntimeEvent: IsType<<Self as frame_system::Config>::RuntimeEvent>;
 	}
 
 	#[pallet::pallet]

substrate/frame/support/test/tests/pallet_ui/event_type_invalid_bound_2.stderr

@@ -1,5 +1,5 @@
-error: Invalid `type Event`, associated type `Event` is reserved and must bound: `From<Event>` or `From<Event<Self>>` or `From<Event<Self, I>>`
+error: Invalid `type RuntimeEvent`, associated type `RuntimeEvent` is reserved and must bound: `From<Event>` or `From<Event<Self>>` or `From<Event<Self, I>>`
  --> $DIR/event_type_invalid_bound_2.rs:9:3
   |
-9 |         type Event: IsType<<Self as frame_system::Config>::Event>;
+9 |         type RuntimeEvent: IsType<<Self as frame_system::Config>::RuntimeEvent>;
   |         ^^^^