Raise a TypeError when Image() is called

[radarhere]

Resolves #7455

When running

from PIL import Image
Image.Image()

this PR will raise a TypeError

Traceback (most recent call last):
  File "test.py", line 2, in <module>
    Image.Image()
  File "PIL/Image.py", line 488, in __init__
TypeError: Images should not be instantiated directly. Use the module new() function instead.

[radarhere]

@hugovk is there any particular problem with this? My guess would be that it is perhaps too complex of a change for an edge case, and the user in question should just use our API as intended?

[hugovk]

I was waiting to see if @homm had more to say (re: https://github.com/python-pillow/Pillow/pull/7461#discussion_r1413726539).

But it does seem like a edge case (they're getting an error calling the API in the wrong way, and this changes it to another error) and I don't think this has come up before, so I'm leaning towards the status quo.