cumulus: add asset-hub-rococo runtime based on asset-hub-kusama and add asset-bridging support to it (#1215)

This commit adds Rococo Asset Hub dedicated runtime so we can test new
features here, before merging them in Kusama Asset Hub.
Also adds one such feature: asset transfer over bridge (Rococo AssetHub
<> Wococo AssetHub)

- clone `asset-hub-kusama-runtime` -> `asset-hub-rococo-runtime`
- make it use Rococo primitives, names, assets, constants, etc
- add asset-transfer-over-bridge support to Rococo AssetHub <> Wococo
AssetHub

Fixes #1128

---------

Co-authored-by: Branislav Kontur <bkontur@gmail.com>
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>

cumulus/parachains/runtimes/assets/common/src/matching.rs

@@ -19,6 +19,7 @@ use xcm::{
 	latest::prelude::{MultiAsset, MultiLocation},
 	prelude::*,
 };
+use xcm_builder::ensure_is_remote;
 
 frame_support::parameter_types! {
 	pub LocalMultiLocationPattern: MultiLocation = MultiLocation::new(0, Here);
@@ -56,3 +57,41 @@ impl<SelfParaId: Get<ParaId>> ContainsPair<MultiLocation, MultiLocation>
 		}
 	}
 }
+
+/// Adapter verifies if it is allowed to receive `MultiAsset` from `MultiLocation`.
+///
+/// Note: `MultiLocation` has to be from a different global consensus.
+pub struct IsTrustedBridgedReserveLocationForConcreteAsset<UniversalLocation, Reserves>(
+	sp_std::marker::PhantomData<(UniversalLocation, Reserves)>,
+);
+impl<
+		UniversalLocation: Get<InteriorMultiLocation>,
+		Reserves: ContainsPair<MultiAsset, MultiLocation>,
+	> ContainsPair<MultiAsset, MultiLocation>
+	for IsTrustedBridgedReserveLocationForConcreteAsset<UniversalLocation, Reserves>
+{
+	fn contains(asset: &MultiAsset, origin: &MultiLocation) -> bool {
+		let universal_source = UniversalLocation::get();
+		log::trace!(
+			target: "xcm::contains",
+			"IsTrustedBridgedReserveLocationForConcreteAsset asset: {:?}, origin: {:?}, universal_source: {:?}",
+			asset, origin, universal_source
+		);
+
+		// check remote origin
+		let _ = match ensure_is_remote(universal_source, *origin) {
+			Ok(devolved) => devolved,
+			Err(_) => {
+				log::trace!(
+					target: "xcm::contains",
+					"IsTrustedBridgedReserveLocationForConcreteAsset origin: {:?} is not remote to the universal_source: {:?}",
+					origin, universal_source
+				);
+				return false
+			},
+		};
+
+		// check asset according to the configured reserve locations
+		Reserves::contains(asset, origin)
+	}
+}