feat: Vendor pezkuwi-subxt and pezkuwi-zombienet-sdk into monorepo

- Add pezkuwi-subxt crates to vendor/pezkuwi-subxt
- Add pezkuwi-zombienet-sdk crates to vendor/pezkuwi-zombienet-sdk
- Convert git dependencies to path dependencies
- Add vendor crates to workspace members
- Remove test/example crates from vendor (not needed for SDK)
- Fix feature propagation issues detected by zepter
- Fix workspace inheritance for internal dependencies
- All 606 crates now in workspace
- All 6919 internal dependency links verified correct
- No git dependencies remaining

vendor/pezkuwi-subxt/utils/fetch-metadata/src/error.rs

@@ -0,0 +1,30 @@
+// 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.
+
+/// Error attempting to fetch metadata.
+#[derive(Debug, thiserror::Error)]
+#[non_exhaustive]
+pub enum Error {
+	/// Error decoding from a hex value.
+	#[error("Cannot decode hex value: {0}")]
+	DecodeError(#[from] hex::FromHexError),
+	/// Some SCALE codec error.
+	#[error("Cannot scale encode/decode value: {0}")]
+	CodecError(#[from] codec::Error),
+	/// JSON-RPC error fetching metadata.
+	#[cfg(feature = "url")]
+	#[error("Request error: {0}")]
+	RequestError(#[from] jsonrpsee::core::ClientError),
+	/// Failed IO when fetching from a file.
+	#[error(
+		"Failed IO for {0}, make sure that you are providing the correct file path for metadata: {1}"
+	)]
+	Io(String, std::io::Error),
+	/// URL scheme is not http, https, ws or wss.
+	#[error("'{0}' not supported, supported URI schemes are http, https, ws or wss.")]
+	InvalidScheme(String),
+	/// Some other error.
+	#[error("Other error: {0}")]
+	Other(String),
+}