[Assets] Implement `pallet-assets-holder` #4187

Job	Run time
preflight / preflight	1m 15s
build (polkadot-availability-recovery, availability-recovery-regression-bench)	7m 31s
build (polkadot-availability-distribution, availability-distribution-regression-bench)	5m 22s
build (polkadot-node-core-approval-voting, approval-voting-regression-bench)	26m 17s
build (polkadot-statement-distribution, statement-distribution-regression-bench)	4m 13s
publish-benchmarks	0s
	44m 38s

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