Seismic slice along user controlled plane

[kjerandp]

Suggestion to add a new component, which is a vertical plane that can be sized, positioned and rotated by the user. As the plane is put to rest, we load the seismic samples along the trajectory of the plane (straight line). As the user modify any transformations, the current slice is removed and we load new data once the plane is again put to rest.

The loading of data could also be set to be manually triggered, in order to limit requests and updates happening during editing the plane.

As a more advanced feature, users could add control points along the plane to shape a linear and/or cubic interpolated curve.

The data loading and rendering would be the same as in the implementation of #163

[GuillaumeVix]

Potentially interesting, but will have to be done in 2D as well.
The UI/UX situation also need to be figured out.