XCM: PayOverXcm config (#6900)

* Move XCM query functionality to trait

* Fix tests

* Add PayOverXcm implementation

* fix the PayOverXcm trait to compile

* moved doc comment out of trait implmeentation and to the trait

* PayOverXCM documentation

* Change documentation a bit

* Added empty benchmark methods implementation and changed docs

* update PayOverXCM to convert AccountIds to MultiLocations

* Implement benchmarking method

* Change v3 to latest

* Descend origin to an asset sender (#6970)

* descend origin to an asset sender

* sender as tuple of dest and sender

* Add more variants to the QueryResponseStatus enum

* Change Beneficiary to Into<[u8; 32]>

* update PayOverXcm to return concrete errors and use AccountId as sender

* use polkadot-primitives for AccountId

* fix dependency to use polkadot-core-primitives

* force Unpaid instruction to the top of the instructions list

* modify report_outcome to accept interior argument

* use new_query directly for building final xcm query, instead of report_outcome

* fix usage of new_query to use the XcmQueryHandler

* fix usage of new_query to use the XcmQueryHandler

* tiny method calling fix

* xcm query handler (#7198)

* drop redundant query status

* rename ReportQueryStatus to OuterQueryStatus

* revert rename of QueryResponseStatus

* update mapping

* Update xcm/xcm-builder/src/pay.rs

Co-authored-by: Gavin Wood <gavin@parity.io>

* Updates

* Docs

* Fix benchmarking stuff

* Destination can be determined based on asset_kind

* Tweaking API to minimise clones

* Some repotting and docs

---------

Co-authored-by: Anthony Alaribe <anthonyalaribe@gmail.com>
Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>
Co-authored-by: Anthony Alaribe <anthony.alaribe@parity.io>
Co-authored-by: Gavin Wood <gavin@parity.io>

polkadot/xcm/pallet-xcm/src/mock.rs

@@ -50,6 +50,7 @@ pub mod pallet_test_notifier {
 	use frame_system::pallet_prelude::*;
 	use sp_runtime::DispatchResult;
 	use xcm::latest::prelude::*;
+	use xcm_executor::traits::QueryHandler;
 
 	#[pallet::pallet]
 	pub struct Pallet<T>(_);
@@ -85,7 +86,7 @@ pub mod pallet_test_notifier {
 			let id = who
 				.using_encoded(|mut d| <[u8; 32]>::decode(&mut d))
 				.map_err(|_| Error::<T>::BadAccountFormat)?;
-			let qid = crate::Pallet::<T>::new_query(
+			let qid = <crate::Pallet<T> as QueryHandler>::new_query(
 				Junction::AccountId32 { network: None, id },
 				100u32.into(),
 				querier,