XCM: Implement a blocking barrier (#7098)

* Move XCM matcher to xcm-builder

* Use ProcessMessageError as the error type in MatchXcm and ShouldExecute

* Implement a blocking barrier

* Fixes

* Add benchmarking for force_suspension

* ".git/.scripts/commands/bench/bench.sh" runtime westend pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime rococo pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime kusama pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime polkadot pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime westend pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime rococo pallet_xcm

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Co-authored-by: command-bot <>