[Feature request] Better automation

[Test3lly]

The feature I severely miss is to have some way of adding files that don't require user interaction. For example, automatically adding new files from a directory or having a CLI Premium-only that processes files given as arguments, like with waifu2x-caffe. The latter would be wonderful and let's focus on it here.

Is your feature request related to a problem? Please describe. I have 2 use cases:

• processing manga that I extracted into image files - I do this in batches and I have everything scripted except for processing (CUGAN is great for smoothing dotted shades)
• processing art that I download so I can check out the better version - I currently have a script auto-running waifu2x-caffe on new files, but I want to use CUGAN often instead and manually putting the files and starting processing every time takes a lot of time cumulatively.

Describe the solution you'd like How great it would be if I could plug in Waifu2x-Extension-CLI there, pass the file, custom resolution, model, and denoise level as arguments, and have it done automatically! No clicks is the best UX!

Describe alternatives you've considered [Feature request] Automatic processing of new files in a directory

[AaronFeng753]

I saw your messages and you don't need to open two issues for one request. I'll reply to this issue when there are updates.