Nadaraya-Watson Envelope [LUX]

[Stoneyard]

Hi ,
I'm new to Julia Language at the moment but will eventually be able to contribute more. Would like you to considere these for the todo List.
Nadaraya-Watson-Estimator and the Nadaraya-Watson-Envelope

I think would be very valuable here in Julia.

You can find more info on those here:
https://www.tradingview.com/script/Iko0E2kL-Nadaraya-Watson-Envelope-LuxAlgo/
https://www.tradingview.com/script/amRCTgFw-Nadaraya-Watson-Estimator-LuxAlgo/