Rococo/Westend Coretime Runtime

New runtimes for the Coretime Chain (a.k.a. "Broker Chain") described in
RFC-1.

Replaces https://github.com/paritytech/cumulus/pull/2889


- [x] Add Agile Coretime pallet
https://github.com/paritytech/substrate/pull/14568
- [x] Generate chain specs for local and testnets
- [x] Deploy parachain on Rococo - Done:
[rococo-coretime-rpc.polkadot.io](https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frococo-coretime-rpc.polkadot.io#/explorer)

DevOps issue for Aura keygen:
https://github.com/paritytech/devops/issues/2725

Edit (Dónal): This PR is mainly for Rococo, the Westend runtime is a
shell with no `Broker` pallet. The Rococo runtime has the broker calls
filtered for initial deployment.

---------

Co-authored-by: Dónal Murray <donal.murray@parity.io>
Co-authored-by: 0xmovses <r.v.melkonian@gmail.com>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Marcin S. <marcin@realemail.net>
Co-authored-by: Bastian Köcher <info@kchr.de>
Co-authored-by: command-bot <>
Co-authored-by: Branislav Kontur <bkontur@gmail.com>

substrate/primitives/runtime/src/offchain/storage_lock.rs

@@ -156,7 +156,7 @@ pub struct BlockAndTimeDeadline<B: BlockNumberProvider> {
 
 impl<B: BlockNumberProvider> Clone for BlockAndTimeDeadline<B> {
 	fn clone(&self) -> Self {
-		Self { block_number: self.block_number.clone(), timestamp: self.timestamp }
+		Self { block_number: self.block_number, timestamp: self.timestamp }
 	}
 }
 

substrate/primitives/runtime/src/traits.rs

@@ -2292,7 +2292,15 @@ pub trait BlockIdTo<Block: self::Block> {
 /// Get current block number
 pub trait BlockNumberProvider {
 	/// Type of `BlockNumber` to provide.
-	type BlockNumber: Codec + Clone + Ord + Eq + AtLeast32BitUnsigned;
+	type BlockNumber: Codec
+		+ Clone
+		+ Ord
+		+ Eq
+		+ AtLeast32BitUnsigned
+		+ TypeInfo
+		+ Debug
+		+ MaxEncodedLen
+		+ Copy;
 
 	/// Returns the current block number.
 	///
@@ -2320,6 +2328,13 @@ pub trait BlockNumberProvider {
 	fn set_block_number(_block: Self::BlockNumber) {}
 }
 
+impl BlockNumberProvider for () {
+	type BlockNumber = u32;
+	fn current_block_number() -> Self::BlockNumber {
+		0
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use super::*;