Format output as a table

[gregmolskow-udri]

I was wondering if it would be possible to add the option to format the argparse summary as a table such that the table contains the following or similar:

argument	default	type	help/description
-- arg	""	str	An example argument

I like the current output, however, some projects I am working on have a lot of arguments and being able to output in a table format would clean up the documentation greatly.