The result returned by a HealthIndicatorFunction. Keyed by the
indicator name, with a status of 'up' or 'down' and optional
additional diagnostic data.
Signature
type HealthIndicatorResult<Key extends string = string, Status extends HealthIndicatorStatus = HealthIndicatorStatus, OptionalData extends Record<string, any> = Record<string, any>> = Record<Key, { status: Status } & OptionalData>