Feature Request: add $VISUAL variable

Hey Ly-sec,

could you add the VISUAL variable to Swiftfetch? 

<img width="334" height="282" alt="Image" src="https://github.com/user-attachments/assets/ec4ee6fd-b69f-435a-98b2-5d13cf30d620" />

Greetings, Nyx