Add flag `--use-mime-file-filtering-for-batch-from-dir`

[light-and-ray]

Description

Adds flag --use-mime-file-filtering-for-batch-from-dir. Allows passing images with no or with incorrect extension in batch from directory

Also I've fixed a bug when check requirements ignores requirements with no version

And also shared the img2img images walk logic with Extras/Batch from dir, instead of list of files

Checklist:

• [x] I have read contributing wiki page
• [x] I have performed a self-review of my own code
• [x] My code follows the style guidelines
• [x] My code passes tests