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/bin/utils/chain-spec-builder/README.docify.md

@@ -32,7 +32,7 @@ around by the `bash!(...)` macro calls.
 Runtimes relying on generating the chain specification with this tool should
 implement `cumulus_primitives_core::GetTeyrchainInfo` trait, a new runtime API
 designed to provide the teyrchain ID from the `teyrchain-info`
-pallet. The `para-id` flag can be used though if the runtime does not implement
+pezpallet. The `para-id` flag can be used though if the runtime does not implement
 the runtime API, and the teyrchain id will be fetched by the node from chain
 specification. This can be especially useful when syncing a node from a state
 where the runtime does not implement `cumulus_primitives_core::GetTeyrchainInfo`.