fonts: Refactor fonts page into something more comprehensive
    
    This commit refactors the content for the fonts page. I focused on
    organization and layout. I restructured the previous layout from a more
    command line vs. GUI approach, and instead emphasized "packaged vs.
    unpackaged" fonts.
    
    I was inspired to rework this page because I went looking for it
    recently, and the search engine led me here. :-)
    
    Signed-off-by: Justin W. Flory (he/him) <git@jwf.io>