feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/frame/system/rpc/runtime-api/Cargo.toml

@@ -0,0 +1,26 @@
+[package]
+name = "frame-system-rpc-runtime-api"
+version = "26.0.0"
+authors.workspace = true
+edition.workspace = true
+license = "Apache-2.0"
+homepage.workspace = true
+repository.workspace = true
+description = "Runtime API definition required by System RPC extensions."
+readme = "README.md"
+
+[lints]
+workspace = true
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]
+
+[dependencies]
+codec = { workspace = true }
+docify = { workspace = true }
+sp-api = { workspace = true }
+
+[features]
+default = ["std"]
+std = ["codec/std", "sp-api/std"]
+runtime-benchmarks = ["sp-api/runtime-benchmarks"]

substrate/frame/system/rpc/runtime-api/README.md

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+Runtime API definition required by System RPC extensions.
+
+This API should be imported and implemented by the runtime,
+of a node that wants to use the custom RPC extension
+adding System access methods.
+
+License: Apache-2.0

substrate/frame/system/rpc/runtime-api/src/lib.rs

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+// This file is part of Substrate.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Runtime API definition required by System RPC extensions.
+//!
+//! This API should be imported and implemented by the runtime,
+//! of a node that wants to use the custom RPC extension
+//! adding System access methods.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[docify::export(AccountNonceApi)]
+sp_api::decl_runtime_apis! {
+	/// The API to query account nonce.
+	pub trait AccountNonceApi<AccountId, Nonce> where
+		AccountId: codec::Codec,
+		Nonce: codec::Codec,
+	{
+		/// Get current account nonce of given `AccountId`.
+		fn account_nonce(account: AccountId) -> Nonce;
+	}
+}