Make it possible to increase the UI scale

[sang-shelton]

Feature title

Add increasing and decreasing the UI scale.

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Describe the current situation we have

I have a high resolution monitor, elements in the UI are small. Most apps on my MX Linux are displaying correctly, while others are have small elements not respecting the 2x scale i applied to the system. Same problem here

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Describe the solution you'd like

There should be an option to increase and decrease the UI scale, making elements bigger or smaller. Like the zoom option in sniffnet