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/pezpallets/validator-pool/src/weights.rs

@@ -27,9 +27,9 @@
 // Executed Command:
 // /home/mamostehp/Pezkuwi-SDK/target/release/pezkuwi
 // benchmark
-// pallet
+// pezpallet
 // --chain=dev
-// --pallet=pezpallet_validator_pool
+// --pezpallet=pezpallet_validator_pool
 // --extrinsic=*
 // --steps=50
 // --repeat=20