Change the order of trackers in a cell array of tracker structures.
The functions upports the following ordering options:
IdentifierAscending
IdentifierDescending
Input:
trackers: Cell array of tracker structures.
order: A string that defines the order of trackers. See the description above for available options.
Output:
trackers: A modified cell array of tracker structures.
indices: The mapping from the old to the new array.