Separation confirm_img_paste is required to img_name_func and confirm message

[Jaehaks]

🚀 The feature, motivation and pitch

In current, Entering Y or N must be done after entering the file name.
confirm_img_paste = false disables both entering file name and confirm message.

If I set img_name_func = nil to enter filename manually and ignore confirm message,
the default location of image set to default folder (asset/img)
When img_name_func is set to change location which image is downloaded, I can't set confirm_img_paste independently.

I suggest to separate confirm_img_paste for img_name_func and confirm message.

Alternatives

No response

Additional context

No response