bank: add lightweight bank hash cache to reduce bank forks usage #11005

Job	Run time
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	18m 4s
check	2m 53s
test (single-pool/cli, single-pool/program)	17m 51s
cargo-test-sbf (token/program)	8m 19s
test (token-upgrade/cli, token-upgrade/program)	16m 30s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	14m 33s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 36s
cargo-test-sbf (token-upgrade/program)	8m 40s
cargo-test-sbf (feature-proposal/program)	7m 56s
cargo-test-sbf (governance/addin-mock/program, governance/program)	11m 38s
cargo-test-sbf (memo/program)	8m 11s
cargo-test-sbf (name-service/program)	7m 58s
cargo-test-sbf (stake-pool/program)	11m 49s
cargo-test-sbf (single-pool/program)	8m 46s
	2h 32m 44s

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