feat: render markdown with glow

[h0rv]

It would be great if we can optionally render the markdown with https://github.com/charmbracelet/glow.

[TypicalAM]

That would require adding an option to use a custom pager. This shouldn't be that much work, it is on my list of priorities.

[h0rv]

Cool, no promises but I will try to look into that too