Feat: add zathura theme

[bakageddy]

Added Zathura port for this awesome colorscheme

!

[fabienengels]

Hi,
I can confirm it works, I just disabled recolor which was enable by default.

[danielrainer]

Works well.

Whether recolor should be set is a matter of preference, but I like it being the default, as this means that people see how it looks and can then decide whether they want it enabled.

You could add an entry to the Extras section of the readme to link to the added file.