WIP: Add image paste functionality

[ljrk0]

Hi, this implements #74, however I'm neither a Python person, nor a GUI/GTK person, so this is highly hacky. Maybe this can be a basis for proper implementation?

[amka]

Haha! I started working on the same feature a few days ago, thank you for submitting the PR, I will review it.

[ljrk0]

Awesome! I'm happy to also help with refactoring (Currently I call into the screenshot service for decoding) and applying any other fixes, also of course the code smell detected by the CI. I hope I can get to that tomorrow, any feedback appreciated!

[amka]

@ljrk0 I'll close this due to implemented in a main branch with your help 🤗 Thank you!

[ljrk0]

Awesome, I love your improvements to my initial draft, thank you! :3