Ability to auto-inspect on repl eval

[vemv]

There's cider-auto-inspect-after-eval which only affects interactive eval, not repl eval.

This mostly makes sense, since it would be confusingly disruptive if, right after sending a form over the repl, Emacs focused to the Inspector buffer.

However after #3634 it will be possible to keep the Inspector in the background.

So I'm thinking of a new defcustom, cider-auto-inspect-after-repl-eval, default nil.

When set to t, after every repl eval, the Inspector buffer would be refreshed with the corresponding value. This is handy for intrincate results.

[bbatsov]

You can also make the old config accept symbols to have more granular behavior - e.g. 'interactive, 'repl, 'all. Something along those lines. We've done such changes quite a few times in the past.

[vemv]

Nice! Would be all for it