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

docs/contributor/commands-readme.md

@@ -38,6 +38,6 @@ the default branch.
 
 The regex in cmd.yml is: `^(\/cmd )([-\/\s\w.=:]+)$` accepts only alphanumeric, space, "-", "/", "=", ":", "." chars.
 
-`/cmd bench --runtime bridge-hub-zagros --pallet=pallet_name`
+`/cmd bench --runtime bridge-hub-zagros --pezpallet=pallet_name`
 `/cmd prdoc --audience runtime_dev runtime_user --bump patch --force`
 `/cmd update-ui --image=docker.io/paritytech/ci-unified:bullseye-1.77.0-2024-04-10-v202407161507 --clean`