Complete rebrand: Polkadot→Pezkuwi, Substrate→Bizinikiwi

- Replace PolkadotConfig with PezkuwiConfig
- Replace SubstrateConfig with BizinikiwConfig
- Rename config module files (polkadot.rs→pezkuwi.rs, substrate.rs→bizinikiwi.rs)
- Update all documentation and examples
- All 165 files updated, cargo check passes

lightclient/Cargo.toml

@@ -12,7 +12,7 @@ repository.workspace = true
 documentation.workspace = true
 homepage.workspace = true
 description = "Light Client for chain interaction"
-keywords = ["blockchain", "parity", "substrate"]
+keywords = ["blockchain", "parity", "bizinikiwi"]
 
 [lints]
 workspace = true

lightclient/src/lib.rs

@@ -3,7 +3,7 @@
 // see LICENSE for license details.
 
 //! A wrapper around [`smoldot_light`] which provides an light client capable of connecting
-//! to Substrate based chains.
+//! to Bizinikiwi based chains.
 
 #![deny(missing_docs)]
 #![cfg_attr(docsrs, feature(doc_cfg))]