add merkle root meta column to blockstore #3580

Job	Run time
check	0s
test	0s
cargo-test-sbf (token/program)	7m 28s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	11m 36s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	8m 36s
cargo-test-sbf (token-upgrade/program)	11m 26s
cargo-test-sbf (feature-proposal/program)	10m 6s
cargo-test-sbf (governance/addin-mock/program, governance/program)	20m 19s
cargo-test-sbf (memo/program)	7m 10s
cargo-test-sbf (name-service/program)	12m 54s
cargo-test-sbf (stake-pool/program)	20m 57s
cargo-test-sbf (single-pool/program)	14m 47s
	2h 5m 19s

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