Add "compact mode" for table rendering

[pete-woods]

At the moment, if you use glamour.WithWordWrap(terminalWidth), tables will aim to occupy the full width of your terminal.

If you do not want this, you can set glamour.WithWordWrap(0), however this makes glamour unaware of your terminal's width, so it picks what looks like 120 as the maximum, preventing supporting anything wider.

I'd propose adding a new WithTableFitContent option (I don't feel strongly about the name) in order to enable this behaviour.

This is mainly to make output look nicer when you have a very wide terminal.

See related issue.

I've made two simple PRs, showing what an implementation might look like:

• Add compact mode for table rendering #571
• Add ContentWidth property to table renderer lipgloss#697