Introduce SchedulingStateMachine for unified scheduler [NO-MERGE&REVIEW-ONLY-MODE] #8031

Job	Run time
cargo-test-sbf (token/program)	6m 15s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	6m 25s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	6m 24s
check	0s
test	0s
cargo-test-sbf (token-upgrade/program)	6m 24s
cargo-test-sbf (feature-proposal/program)	6m 21s
cargo-test-sbf (governance/addin-mock/program, governance/program)	6m 23s
cargo-test-sbf (memo/program)	6m 14s
cargo-test-sbf (name-service/program)	5m 57s
cargo-test-sbf (stake-pool/program)	6m 24s
cargo-test-sbf (single-pool/program)	6m 24s
	1h 3m 11s

Provide feedback