Prompt for extending canvas size when importing an image

[5lood237]

When pasting or importing an image into a file, and the image size is bigger than the canvas size, the user should be prompted on whether they want the canvas to expand to the size of the image.

Expanding should extend either height, width, or both to fit the image rather than become the the size of the image.

[circular17]

Makes sense

[Alexey-T]

Support+