Update DataFrameDetectionReader to support Clutter vs. True Detections

[mkierzenka]

Hello all, first time making a post here.
I have been using Stone Soup for a few months now- thank you for your efforts!

I see the support for Clutter Detections in the Simulators, which I think is a neat inclusion. But when I store simulated data into a Pandas DataFrame and read it back out, the DataFrameDetectionReader has no ability to return Clutter vs. True Detections (they are always just the generic Detection type). I store whether or not each detection is clutter as a field in my data frame and it would be helpful for playback to have the system natively return the proper type.

I would love to take a crack at implementing this, if that is okay. Perhaps by adding a Callable property on DataFrameDetectionReader that the user can override with a dict->boolean function that returns true for True Detections and false for Clutter Detections? Then DataFrameDetectionReader.detections_gen() could use that internally to create an object of the proper type. I would be sure to preserve the default behavior to what it is now, too.

Please let me know what you think!

[sdhiscocks]

Hi @mkierzenka. Sounds like a useful feature, and contribution would be welcomed 👍