Set Custom colors via flag

[o2sh]

Currently, the colors used for each language are hard coded in a vector:
Language::Clojure => vec![Color::BrightBlue, Color::BrightGreen]

We would like to give the user the possibility to set his own colors by passing a flag:

onefetch --ascii_colors 1 2 3 4 5 6

Inspired from a neofetch's feature , it would be helpful to add a visual marker at the bottom right to tell the user the color order (1: red, 2: green...) as such :

This feature is for the brave only 🥇

[spenserblack]

Sounds fun! Can I try this one?