cumulus-primitives-parachain-inherent: Split into two crates (#2803)

This splits `cumulus-primitives-parachain-inherent` into two crates, the
previous `cumulus-primitives-parachain-inherent` and a new
`cumulus-client-parachain-inherent`. The idea behind this is to move the
`create_at` logic into the client crate. This removes quite a lot of
unrelated dependencies from the runtime std build and thus, makes the
compilation faster. On my Laptop the compilation is goes down by one
minute for `asset-hub-rococo-runtime`. I also assume that the full build
of the entire workspace probably can be speed-up a little bit, because
more stuff can be compiled in parallel.

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Co-authored-by: command-bot <>

cumulus/client/consensus/aura/src/collator.rs

@@ -30,10 +30,10 @@ use cumulus_client_consensus_common::{
 	self as consensus_common, ParachainBlockImportMarker, ParachainCandidate,
 };
 use cumulus_client_consensus_proposer::ProposerInterface;
+use cumulus_client_parachain_inherent::{ParachainInherentData, ParachainInherentDataProvider};
 use cumulus_primitives_core::{
 	relay_chain::Hash as PHash, DigestItem, ParachainBlockData, PersistedValidationData,
 };
-use cumulus_primitives_parachain_inherent::ParachainInherentData;
 use cumulus_relay_chain_interface::RelayChainInterface;
 
 use polkadot_node_primitives::{Collation, MaybeCompressedPoV};
@@ -124,7 +124,7 @@ where
 		parent_hash: Block::Hash,
 		timestamp: impl Into<Option<Timestamp>>,
 	) -> Result<(ParachainInherentData, InherentData), Box<dyn Error + Send + Sync + 'static>> {
-		let paras_inherent_data = ParachainInherentData::create_at(
+		let paras_inherent_data = ParachainInherentDataProvider::create_at(
 			relay_parent,
 			&self.relay_client,
 			validation_data,