Is there an existing issue for this?

• I have searched the existing issues.

Describe the solution you'd like

Add a link to the official user manual/wiki/docs in the footer of the GUI

Pointing to this: https://github.com/GyulyVGC/sniffnet/wiki

Is your feature request related to a problem?

I'm always frustrated when I can't quickly find the docs/help section of a program I'm using