[Feature Request]: 16 pix Rounding on img2img % scale

[LjeDamos]

Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What would your feature do ?

Automatically adjust end resolution so it will be divisible by 16 pixels to prevent grey bars on sides.

Proposed workflow

1. Go to img2img
2. Select scale by, enter needed value
3. Final resolution will be automatically set so it is divisible by 16 pixels without remainder

Additional information

Example of grey lines:

Original	after img2img