Feature: Make logo customizable

[colllijo]

Description

Add possibility to change the logo at the top left of the wiki to allow for more customization.
The Default should stay the same but if needed it should be possible so that a user of the theme
can upload a custom logo in their static folder and then specify it in the hugo config.

Discussed in #2

^{Originally posted by brxic November 14, 2024}
How can you change the blue Icon in the top left corner? for example put another Logo in the corner.

[brxic]

*top left