Function persistCommitments

persistCommitments(
    registryPath: string,
    groupId: ARID,
    sessionId: ARID,
    startState: StartState,
    commitments: Map<string, unknown>,
): string
Persist collected commitments to disk.

Port of commitments persistence logic from cmd/sign/coordinator/round1.rs.
Parameters
- registryPath: string
- groupId: ARID
- sessionId: ARID
- startState: StartState
- commitments: Map<string, unknown>
Returns string
- Defined in cmd/sign/coordinator/round1.ts:409