Feature request: make scriptable

[timpulver]

In order to use DiffusionBee with an (Apple) script, all menu items need to be present in the menu. I would propose to add the following entries:

• File -> Import text from clipboard
• File -> Generate
• File -> Save Image

This way we could write an Apple Script like the following (pseudo code):

for artist in ["Wassily Kandinsky", "Vincent van Gogh", "Pablo Picasso"]
    set clipboard text to `horse, painting by ${artist}`
    tell app DiffusionBee to to "Import text from clipboard"
    wait one minute
    tell app DiffusionBee to to "Save Image"

It would be great if it was possible to specify where the image is saved to and what the name is, e.g. ~/my-experiment/horse-by-picasso.png.

When a certain action is not possible (e.g. "Save Image" before an image was generated), the menu entry would need to be greyed out.

[timpulver]

@divamgupta would you accept a PR for this?