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/primitives/ethereum/src/log.rs

@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+use codec::{Decode, Encode};
+use ethereum_types::{H160, H256};
+use sp_std::prelude::*;
+
+#[derive(Clone, Debug, Encode, Decode, PartialEq, Eq)]
+pub struct Log {
+	pub address: H160,
+	pub topics: Vec<H256>,
+	pub data: Vec<u8>,
+}
+
+impl rlp::Decodable for Log {
+	/// We need to implement rlp::Decodable manually as the derive macro RlpDecodable
+	/// didn't seem to generate the correct code for parsing our logs.
+	fn decode(rlp: &rlp::Rlp) -> Result<Self, rlp::DecoderError> {
+		let mut iter = rlp.iter();
+
+		let address: H160 = match iter.next() {
+			Some(data) => data.as_val()?,
+			None => return Err(rlp::DecoderError::Custom("Expected log address")),
+		};
+
+		let topics: Vec<H256> = match iter.next() {
+			Some(data) => data.as_list()?,
+			None => return Err(rlp::DecoderError::Custom("Expected log topics")),
+		};
+
+		let data: Vec<u8> = match iter.next() {
+			Some(data) => data.data()?.to_vec(),
+			None => return Err(rlp::DecoderError::Custom("Expected log data")),
+		};
+
+		Ok(Self { address, topics, data })
+	}
+}
+
+#[cfg(test)]
+mod tests {
+
+	use super::Log;
+	use hex_literal::hex;
+
+	const RAW_LOG: [u8; 605] = hex!(
+		"
+		f9025a941cfd66659d44cfe2e627c5742ba7477a3284cffae1a0266413be5700ce8dd5ac6b9a7dfb
+		abe99b3e45cae9a68ac2757858710b401a38b9022000000000000000000000000000000000000000
+		00000000000000000000000060000000000000000000000000000000000000000000000000000000
+		00000000c00000000000000000000000000000000000000000000000000000000000000100000000
+		00000000000000000000000000000000000000000000000000000000283163466436363635394434
+		34636665324536323763353734324261373437376133323834634666410000000000000000000000
+		00000000000000000000000000000000000000000000000000000000000000000000000000000000
+		000000000773656e6445544800000000000000000000000000000000000000000000000000000000
+		00000000000000000000000000000000000000000000000000000001000000000000000000000000
+		00cffeaaf7681c89285d65cfbe808b80e50269657300000000000000000000000000000000000000
+		000000000000000000000000a0000000000000000000000000000000000000000000000000000000
+		0000000000000000000000000000000000000000000000000000000000000000000000000a000000
+		00000000000000000000000000000000000000000000000000000000020000000000000000000000
+		00000000000000000000000000000000000000002f3146524d4d3850456957585961783772705336
+		5834585a5831614141785357783143724b5479725659685632346667000000000000000000000000
+		0000000000
+	"
+	);
+
+	#[test]
+	fn decode_log() {
+		let log: Log = rlp::decode(&RAW_LOG).unwrap();
+		assert_eq!(log.address.as_bytes(), hex!["1cfd66659d44cfe2e627c5742ba7477a3284cffa"]);
+		assert_eq!(
+			log.topics[0].as_bytes(),
+			hex!["266413be5700ce8dd5ac6b9a7dfbabe99b3e45cae9a68ac2757858710b401a38"]
+		);
+	}
+}