[ENH] UMap wrapper for channel selection

[TonyBagnall]

Describe the feature or idea you want to propose

it would be good to have a transformer that uses UMAP for channel selection
https://arxiv.org/pdf/1802.03426

Describe your proposed solution

introduce https://github.com/lmcinnes/umap as a dependency, sort out any import issues, implement channel selection as an aeon CollectionTransformer in transformations/collection/channel_selection

Describe alternatives you've considered, if relevant

No response

Additional context

No response