feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

bridges/snowbridge/pallets/outbound-queue/runtime-api/src/lib.rs

@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2023 Snowfork <hello@snowfork.com>
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use frame_support::traits::tokens::Balance as BalanceT;
+use snowbridge_core::PricingParameters;
+use snowbridge_merkle_tree::MerkleProof;
+use snowbridge_outbound_queue_primitives::v1::{Command, Fee};
+
+sp_api::decl_runtime_apis! {
+	pub trait OutboundQueueApi<Balance> where Balance: BalanceT
+	{
+		/// Generate a merkle proof for a committed message identified by `leaf_index`.
+		/// The merkle root is stored in the block header as a
+		/// `sp_runtime::generic::DigestItem::Other`
+		fn prove_message(leaf_index: u64) -> Option<MerkleProof>;
+
+		/// Calculate the delivery fee for `command`
+		fn calculate_fee(command: Command, parameters: Option<PricingParameters<Balance>>) -> Fee<Balance>;
+	}
+}