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/pezframe/examples/basic/src/weights.rs

@@ -30,11 +30,11 @@
 // Executed Command:
 // ./target/release/bizinikiwi
 // benchmark
-// pallet
+// pezpallet
 // --chain=dev
 // --execution=wasm
 // --wasm-execution=compiled
-// --pallet=pezpallet_example_basic
+// --pezpallet=pezpallet_example_basic
 // --extrinsic=*
 // --steps=50
 // --repeat=20