Move client consensus parts out of primitives and into client/consensus/api (#9319)

* moved client code out of primitives

* bump ci

* Fixup from merge.

* Removed unused deps thanks to review feedback

* Removing unneeded deps

* updating lock file

* note about rustfmt

* fixed typo to bump ci

* Move lonely CacheKeyId to parent

* cargo fmt

* updating import style

* Update docs/STYLE_GUIDE.md

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

substrate/primitives/blockchain/src/backend.rs

@@ -293,7 +293,7 @@ pub enum BlockStatus {
 /// A list of all well known keys in the blockchain cache.
 pub mod well_known_cache_keys {
 	/// The type representing cache keys.
-	pub type Id = sp_consensus::import_queue::CacheKeyId;
+	pub type Id = sp_consensus::CacheKeyId;
 
 	/// A list of authorities.
 	pub const AUTHORITIES: Id = *b"auth";