Efl.Gfx.Vg.Value_Provider is an object for integrating and managing the properties of vector objects.
These values are dependent on the keypath.
Keypath is the target a specific content or a set of contents that will be updated.
It can include the specific name of the contents, wildcard(*) or Globstar(**).
The valueProvider is borrowed from another library that uses a vector object of type json, such as Efl.Ui.Animation_View
This feature should be used with some patches that apply to the vg json loader and Efl.Canvas.Vg.Object.