support linking to modules & symbols via @link

[crowlKats]

as described in https://jsdoc.app/tags-module

a way to get a shortpath from a string that checks its a valid shortpath in this context is necessary.

[nberlette]

It would also be great to support the @see tag, which often times include a @link tag within them.

The linking is probably going to be the trickiest part. IIRC the VSCode team had quite a challenge with the contextual linking for their implementation, but theirs is a bit more robust than I'd expect deno doc's would need to be (e.g. linking to parameters by identifier only from an outer JSDoc comemnt).

[crowlKats]

@nberlette #489 for @see