[EV3]: Allow setting clip start/end on simulator window

[RichDom2185]

As the robot is relatively small, one may want to zoom into the simulator window to see the robot more clearly.

However, at close distances, the robot is easily clipped.

Likewise, performance-constrained devices might want to reduce the far end of the render distance should the map become more complex.

It might be useful to add a setting in the simulator panel to control the clipping distance start/end-points, similar to 3D software like Blender:

Perhaps we can also add something like a map scale at a corner to visualise the scale of things?