Cynthion Hardware support for umap2

[DeveloperMarius]

Hello,
I created a PR nccgroup#41 in the original https://github.com/nccgroup/umap2 repo.
That PR may be interesting for this project too.

~ Marius

[DeveloperMarius]

Hello,
my PR in the umap2 repository includes support for the Cynthion Hardware.
As it takes some time to migrate my PR from umap2 to nu-map it would be great to get some feedback beforehand, if there is an interest from one of the maintainers that can actually merge my PR? @mossmann @straithe

I would love to get some feedback from you.
~ Marius