Renaming and documentation for ApplyResult, ApplyOutcome and et al (#4134)

* Remove superflous errors from the system module

* Rename and document InclusionOutcome

* Rename InclusionError

* Remove unused inclusion errors.

I left the enumeration though since other elements might be used some day.

* Rename and document DispatchOutcome

* Apply suggestions from code review

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* TransactionValidityError instead of InclusionError

* Rename InclusionOutcome to ApplyExtrinsicResult

* Update docs.

* Update lib.rs

should be → is

* Bump the block builder API version.

* Fix the should_return_runtime_version test

* Clean the evidence

substrate/primitives/sr-primitives/src/generic/checked_extrinsic.rs

@@ -74,7 +74,7 @@ where
 		self,
 		info: Self::DispatchInfo,
 		len: usize,
-	) -> crate::ApplyResult {
+	) -> crate::ApplyExtrinsicResult {
 		let (maybe_who, pre) = if let Some((id, extra)) = self.signed {
 			let pre = Extra::pre_dispatch(extra, &id, &self.function, info.clone(), len)?;
 			(Some(id), pre)