Support a maximum table width and automatically scale columns within that width (for tty output)

[vcschapp]

User Story

As a user of command-line interface tools (CLIs) I would like Markdown tables output from my CLI to fill my terminal/tty without overflowing and having weird line wraps.

The idea is that if I set a maximum table width property, the table will elide wide column names and values, if necessary, to fit the table within the max width. Then a CLI tool author can check if the standard output is attached to a terminal; if yes, use the max width, and if no, allow the current behavior.