Add sine to functions

[matzebond]

Do you think it would make sense to add a sine function (over R and maybe only [-npi; npi]) to available functions in
https://github.com/phiresky/convolution-demo/blob/master/src/main.tsx#L53
and how hard would it be?

[phiresky]

Sure, makes sense.

and how hard would it be?

Should be pretty easy, pretty much just have to define the function as a JS function (with a configurable frequency, see the others with a configurable knob) and a Tex template so it can be displayed in the UI