fix: Convert vendor/pezkuwi-subxt from submodule to regular directory

vendor/pezkuwi-subxt/core/src/lib.rs

@@ -0,0 +1,49 @@
+// Copyright 2019-2024 Parity Technologies (UK) Ltd.
+// This file is dual-licensed as Apache-2.0 or GPL-3.0.
+// see LICENSE for license details.
+
+//! # subxt-core
+//!
+//! A `#[no_std]` compatible subset of the functionality provided in the `subxt` crate. This
+//! contains the core logic for encoding and decoding things, but nothing related to networking.
+//!
+//! Here's an overview of the main things exposed here:
+//!
+//! - [`blocks`]: decode and explore block bodies.
+//! - [`constants`]: access and validate the constant addresses in some metadata.
+//! - [`custom_values`]: access and validate the custom value addresses in some metadata.
+//! - [`storage`]: construct storage request payloads and decode the results you'd get back.
+//! - [`tx`]: construct and sign transactions (extrinsics).
+//! - [`runtime_api`]: construct runtime API request payloads and decode the results you'd get back.
+//! - [`events`]: decode and explore events.
+//!
+
+#![deny(missing_docs)]
+#![cfg_attr(not(feature = "std"), no_std)]
+pub extern crate alloc;
+
+pub mod blocks;
+pub mod client;
+pub mod config;
+pub mod constants;
+pub mod custom_values;
+pub mod dynamic;
+pub mod error;
+pub mod events;
+pub mod runtime_api;
+pub mod storage;
+pub mod tx;
+pub mod utils;
+pub mod view_functions;
+
+pub use config::Config;
+pub use error::Error;
+pub use pezkuwi_subxt_metadata::Metadata;
+
+/// Re-exports of some of the key external crates.
+pub mod ext {
+    pub use codec;
+    pub use scale_decode;
+    pub use scale_encode;
+    pub use scale_value;
+}