utils:
add `SaveFile()` function to save file to a path
image:
add empty file ext check for inspect backends
actions:
allow save image from link
api:
`POSTArtworksIDFiles()` function allow upload image from link
scripts:
implement image upload from link or file in `preview` and `artwork_id`
fix `artwork_id` redirect bug
template/img_setting:
add upload elements
adjust styles