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/beacon/src/bits.rs

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+use sp_std::{convert::TryInto, prelude::*};
+use ssz_rs::{Bitvector, Deserialize};
+
+pub fn decompress_sync_committee_bits<
+	const SYNC_COMMITTEE_SIZE: usize,
+	const SYNC_COMMITTEE_BITS_SIZE: usize,
+>(
+	input: [u8; SYNC_COMMITTEE_BITS_SIZE],
+) -> [u8; SYNC_COMMITTEE_SIZE] {
+	Bitvector::<{ SYNC_COMMITTEE_SIZE }>::deserialize(&input)
+		.expect("checked statically; qed")
+		.iter()
+		.map(|bit| u8::from(bit == true))
+		.collect::<Vec<u8>>()
+		.try_into()
+		.expect("checked statically; qed")
+}