[inspect] Count small lazy collections

[alexander-yakushev]

Addresses #268.

This influences both the Count indicator in the header for types like Cons or small lazy seqs, but also displays such collections as lists when they are inside containers like atoms, delays, etc.

[vemv]

Can't review these days

Kudos for your continued efforts!

[alexander-yakushev]

Quote minor, proceeding with the merge.

[bbatsov]

Sorry about the radio silence from me. Somehow I missed this PR.

[alexander-yakushev]

No problem ❤️