Support subpixel font rendering

[wdhwg001]

Currently, QuickLook does not support subpixel rendering, which is also called ClearType in Windows. It's a technology that takes advantage of the R-G-B LCD grid order to do font anti-aliasing and make the font rendering sharper.

I did not read the code of QuickLook, but if it is a UWP application, it could be possible to "enable" ClearType in this way:
https://stackoverflow.com/questions/46154604/uwp-cleartype-or-smooth-font

Although normally, UWP does not support subpixel font rendering, QuickLook need to preview documents, text files and font files. Supporting subpixel font rendering can greatly reduce the text blurry and improve user experience.