Add option to use less or something to briefly open each vhdl file for skimming

[benjamin051000]

It's generally a good idea to skim through the code to ensure it looks how one would expect. Less would be an easy way to do this quickly, rather than opening it in a text editor manually.

[benjamin051000]

Honestly, textual is insane. If we implement #19 (which I definitely think will happen now), textual may be able to display the source files with syntax highlighting no problem... The demo shows it rendering JSON in a scrollable pane??? Crazy!