Invoke Mover though API

Is your feature request related to a problem?

I often manually invoke the mover before I expect to move over a large file or I see my cache is getting full. The API currently does not have an option to invoke it remotely. This is especially helpful for 3rd Party Apps which rely on the the API or to create options which would look at storage and start the mover.

Describe the solution you'd like

A mutation to invoke the mover and return it's status.

mutation SetState($initiateMover: initiateMover!) {
  initiateMover(input: $initiateMover) {
    status
  }
}

There is already a mutation to initiateFlashBackup and this would be similar but would just initiate the mover.

Describe alternatives you've considered

N/A

Additional context

N?A

Environment (if relevant)

Unraid OS Version:

N/A

Pre-submission Checklist

• I have searched existing issues to ensure this feature hasn't already been requested
• This is not an Unraid Connect related feature (if it is, please submit via the support form instead)
• I have provided clear examples or use cases for the feature

Start by locating the existing initiateFlashBackup mutation and follow its implementation and status handling. Add the analogous mover-invocation mutation so it returns status, then run the relevant API or GraphQL tests and verify the mutation can initiate the mover remotely.