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

pezkuwi/roadmap/implementers-guide/src/runtime/initializer.md

@@ -1,4 +1,4 @@
-# Initializer Pallet
+# Initializer Pezpallet
 
 This module is responsible for initializing the other modules in a deterministic order. It also has one other purpose as
 described in the overview of the runtime: accepting and forwarding session change notifications.