[Assets] Implement `pallet-assets-holder` #8060

Job	Run time
preflight / preflight	42s
preflight / ci-versions	1m 25s
build (polkadot-availability-recovery, availability-recovery-regression-bench)	7m 34s
build (polkadot-availability-distribution, availability-distribution-regression-bench)	5m 40s
build (polkadot-node-core-approval-voting, approval-voting-regression-bench)	22m 30s
build (polkadot-statement-distribution, statement-distribution-regression-bench)	4m 25s
publish-benchmarks	0s
	42m 16s

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