adding wavesets

[capital-G]

not finished yet - i came up with some things where wavesets could be enhanced but I have not yet finished it.

ToDo:

• [ ] Do discontinuities create "splitting noises"?
• [ ] Explore role of deviations
• [ ] Calc fft for each waveset and apply tsne or else on it

[review-notebook-app[bot]]

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[capital-G]

Merged for now, create issues for extensions on this topic