Add new g-diffuser command "enhance"

[parlance-zz]

Rescale the input image to a higher resolution and use inpainting with a constant mask of some opacity, effectively using SD for super-resolution. The same function could be aliased as a style transfer function, since it would do the same thing depending on opacity value and the prompt supplied.

[lootsorrow]

optional parameter to increment or decrement certain parameters like scale or strength during said operation so that the longer it goes on the more insane the images get as the str gets higher or the scale gets lower