[nad-viewer] Add right-click callback

[flo-dup]

Describe the current behavior

No callback on right-click

Describe the expected behavior

Callback called on right-click on any element (line, transformer, vl node, text node).
Callback defined in constructor.
Callback type:

(equipmentId: string, elementType: string) => void

Describe the motivation

Allow the user to create a context menu.

Extra Information

No response

[flo-dup]

Similarly to OnToggleNadHoverCallbackType, is mousePosition : Point also needed in the callback?