CLI: improve `hax into -i '...'`

[W95Psp]

Currently, that -i flag is redundant with F*'s --interfaces flag.

We should have a unified flag that can express a list of queries with modifiers.

A query selects some items, e.g. *some::module::*.

A modifiers say what to do with the selected items:

• exclude them from the extraction;
• include them and include all their dependencies as well;
• include them without their dependencies;
• include them but only their signature, not their bodies and without their dependencies;
• include them but only their signature, not their bodies and with their dependencies (as signature only).

[W95Psp]

Chatting with @karthikbhargavan about that, maybe more verbosity would be nicer: instead of having one -i <something> flag with containing multiple items, we should have --include, --exclude, --include-only, --include-signature

[W95Psp]

I'm inlining issue #688 there, as a possible enhancement: the selection query language could include selecting item based on visibility.