More options to manipulate cuepoints data on mux-player

[TikiCat7]

At the moment we can only add cuepoints to MuxPlayerElement, there is no way to set the array to anything or remove specific cuepoints. It would be a lot more robust if we could simply treat it as an array instead of add only.

[TikiCat7]

To add more context, I want to add a feature to allow users to tag certain sections of a video and add a cuepoint, at the same time I need to support deleting cuepoints.

If there a way to re-initialize the mux player with new cuepoint values other than refreshing the page, that also works. Any help is appreciated!