Add Upscayl's "LSDIR" Model

[hollowaykeanho]

Description

Please provide a short description of what feature you're looking forward to
add into the existing repository below. Please include the story behind your
idea as well to give a better visualization of your idea.

Upscayl team recently added a "LSDIR" model. Hence, let's patch from upstream.

Expected Behavior

Please specify the expected behavior of your requested feature. Some great and
helpful pointers are your expected interface (e.g. command patterns, simple
sketches of the user interface, etc).

Upscayl's "LSDIR" model is available.

Current Absent Behavior

Please specify the current behavior (e.g. workaround, blockage, etc).

Upscayl's "LSDIR" model is unavailable.

Attachment

Please drag and drop the necessary data files (e.g. screenshot, logs, etc)
below.

[hollowaykeanho]

committed in 7cab0b39ea1f3329744ecd9005c5347330d94955