Not yet
AFAIK, and as can be seen in algorithm module there's none
One can start create, build one
I just searched and didn't find any. I'd like to make one soon though for embedded work, but I won't get to it for at least a month.
They're really not too difficult to implement with a linear algebra solver. Arraymancer should have one, or the SciNim repos might have an alternative implementation.
Here's a general purpose one:
Or a basic 2-d one here: