Modifier key to determine aspect ratio lock when resizing #401
Description
Is your feature request related to a problem? Please describe.
In most image editors when you drag the corners of an image to resize, the software allows you to change the aspect ratio (distort) the image by default, but if you resize while holding a modifier key (usually SHIFT or CTRL), the aspect ratio gets locked. Examples: Windows Paint, Photoshop, and basically every image editor tool ever
Currently there's no way to do this with Image Converter, as there's no modifier key for this, only a global toggle in settings, which is way too inconvenient to toggle twice each time you want to resize an image. The user is forced to pick between either always resizing with locked aspect ratio, or always resizing without it, even though in most use cases whether we want to lock the aspect ratio or not depends on a myriad of factors and often changes case-by-case, based on context and image.
Describe the solution you'd like
The ability to press a modifier key while resizing an image (whether that be through click+drag or scrollwheel resize) to lock/unlock aspect ratio. This would bring the features of image converter in line with what users are used to and expect to happen.