feat: Improve Morh circle display

[RomainBaville]

This pr aims to improve the display of the morh circle by:

• Sort morh circle legend by cell ids
• Annotate cells with their id

The cell annotation can be done with two ways (both are implemented):

• create a surface with the shape of the id of the cell. This surface is placed near to the cell, all the surfaces created are block of a vtm.
• create two attributes on the mesh one with the cell index as str and one with a mask to indicate the selected cell. with this way, user must use Paraview interface and the findData tool. The mask attribute is used to get the active cells and the attribute with the cell index is used to annotate the mesh on ParaView.