(feat) Add support for themes

[bogdanr]

Does it fit the projects scope?

• This is relevant

Why?

I find the current theme distracting and I would prefer it was higher contrast. But in any case, this is a very subjective matter.

Solution?

I think it would be great if we could contribute various themes and be able to select one that we prefer.
In my opinion doing it only from CSS is good enough to change colors, shadows, fonts, etc.

Alternatives?

No response

Extra Context

No response

[enchant97]

In a future update I will probably add the ability to set custom css to override the light and dark themes.