fix: Complete snowbridge pezpallet rebrand and critical bug fixes

- snowbridge-pezpallet-* → pezsnowbridge-pezpallet-* (201 refs)
- pallet/ directories → pezpallet/ (4 locations)
- Fixed pezpallet.rs self-include recursion bug
- Fixed sc-chain-spec hardcoded crate name in derive macro
- Reverted .pezpallet_by_name() to .pallet_by_name() (subxt API)
- Added BizinikiwiConfig type alias for zombienet tests
- Deleted obsolete session state files

Verified: pezsnowbridge-pezpallet-*, pezpallet-staking,
pezpallet-staking-async, pezframe-benchmarking-cli all pass cargo check

bizinikiwi/client/chain-spec/derive/src/impls.rs

@@ -21,7 +21,7 @@ use proc_macro_crate::{crate_name, FoundCrate};
 use quote::quote;
 use syn::{DeriveInput, Error, Ident, Path};
 
-const CRATE_NAME: &str = "sc-chain-spec";
+const CRATE_NAME: &str = "pezsc-chain-spec";
 const ATTRIBUTE_NAME: &str = "forks";
 
 /// Implements `Extension's` `Group` accessor.