Slice doesn't hide the Edges

[Evgeni_Popov]

PR:

Added support for clip planes to the edge renderer

To enable using the clip planes configured at scene level do:

mesh.edgesRenderer.lineShader.options.useClipPlane = null;

To force disabling clip planes even if set at scene level do:

mesh.edgesRenderer.lineShader.options.useClipPlane = false;