Use ansimarkup instead of colorama for color support.

[P403n1x87]

Use the parse function from the ansimarkup package to render colored
output instead of concatenating escape sequences from the colorama
package.

En passant, also used the MarkdownLexer to highlight markdown cells.

[vinayak-mehta]

Use the parse function from the ansimarkup package to render colored output instead of concatenating escape sequences from the colorama package.

Any reason why you chose ansimarkup over colorama? I'll test your change today.

En passant, also used the MarkdownLexer to highlight markdown cells.

Thanks for the MarkdownLexer!

[P403n1x87]

@vinayak-mehta I think that ansimarkup, togrther with f-strings, makes the code more readable and easier to maintain