Add a dark mode

[Noelierx]

Create a dark mode theme for the website.
Add a switch on/off (maybe on the footer?) to change dark mode to light mode

[PetiZila]

I'm up for it

[Noelierx]

I'm up for it

Te voilà donc dessus /o/

[AnshulGoyal589]

@Noelierx I would like to contribute under hactoberfest 2023, kindly assign the issue to me

[Tonystark121]

@Noelierx I'm interested, can you assign me this issue.

[Noelierx]

@Tonystark121 You're also on it!