Add markdown support

[LiquidityC]

Helpfiles are currently writte in MD. This makes them look good in github but not so much when viewed in the client.

Using this lib: https://github.com/netvl/md.rs we could perhaps improve the look of the markdown files when shown in the client.

Coloring is out, but the other data should turn out better then what we have at least.

[tarkah]

Hey, came across your project here from your help wanted tag. Looks pretty cool!

There is this library https://github.com/Canop/termimad. It uses crossterm, where you look like you're using termion, but the library also supports outputting the formatted text with a set width.

As an aside, crossterm targets Windows as well. I use it in a TUI project that I made. If you want full cross-platform support, you may want to migrate over to it.

[tarkah]

Example to print formatted text:

use termimad::*;
let skin = MadSkin::default();
let my_markdown = "#title\n* item 1\n* item 2";
let text = FmtText::from(&skin, &my_markdown, Some(80));
println!("{}", &text);

[LiquidityC]

Yes, I checked that out when I was looking around crates.io earlier. Termimad does a lot of extra rendering that probably won't play nice with my vt102 setup. Particularly the fact that I use scrolling areas and through that split the screen into an input area and an output area. I doubt termimad would respect this configuration.

Thanks for the tip though.

[tarkah]

No problem. https://docs.rs/mdcat seems to be another option, though you may face the same limitations outputting to your terminal. Good luck!