Spline Streamline tools

would love to see streamline versions of all the existing tools for splines, and maybe a few additions.

thinking this would be great to make the app more consistent with how it handles splines.

right off the bat once the basic tools for this are made you could do things like but spline add, onto the extrude streamline, and have insert on the cut stream line, and maybe making a tool for spline that would act just like beveling a vert on a edge, so you could use it to create more control points in the spline by spilting the existing ones.