Removes Snowbridge parachain directory (#3186)

Removes the `bridges/snowbridge/parachain` directory and moves
everything up to under `snowbridge` directly. We are cleaning up our
local dev env after merging our crates into the polkadot-sdk.

---------

Co-authored-by: claravanstaden <Cats 4 life!>

bridges/snowbridge/pallets/outbound-queue/src/process_message_impl.rs

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+//! Implementation for [`frame_support::traits::ProcessMessage`]
+use super::*;
+use crate::weights::WeightInfo;
+use frame_support::{
+	traits::{ProcessMessage, ProcessMessageError},
+	weights::WeightMeter,
+};
+
+impl<T: Config> ProcessMessage for Pallet<T> {
+	type Origin = AggregateMessageOrigin;
+	fn process_message(
+		message: &[u8],
+		origin: Self::Origin,
+		meter: &mut WeightMeter,
+		_: &mut [u8; 32],
+	) -> Result<bool, ProcessMessageError> {
+		let weight = T::WeightInfo::do_process_message();
+		if meter.try_consume(weight).is_err() {
+			return Err(ProcessMessageError::Overweight(weight))
+		}
+		Self::do_process_message(origin, message)
+	}
+}