refactor(benchmarking): rebrand pallet → pezpallet in CLI and scripts

- Rename CLI argument --pallet to --pezpallet (with --pallet as alias)
- Rename --pallets to --pezpallet, --exclude-pallets to --exclude-pezpallets
- Update benchmark subcommand from 'pallet' to 'pezpallet'
- Rename check-frame-omni-bencher.yml to check-pezframe-omni-bencher.yml
- Update all benchmark scripts to use new argument names
- Update cmd.py to use pezframe-omni-bencher and --pezpallet

pezcumulus/scripts/benchmarks-ci.sh

@@ -38,11 +38,11 @@ do
 		output_dir="xcm/"
 		extra_args="--template=./templates/xcm-bench-template.hbs"
 	fi
-	$artifactsDir/pezkuwi-teyrchain benchmark pallet \
+	$artifactsDir/pezkuwi-teyrchain benchmark pezpallet \
 		$extra_args \
 		--chain=$benchmarkRuntimeName \
 		--wasm-execution=compiled \
-		--pallet=$pallet  \
+		--pezpallet=$pallet  \
 		--extrinsic='*' \
 		--steps=$steps  \
 		--repeat=$repeat \