Hopefully the final piece that concerns semantic indentation.

This change generalize the way we detect indentation for macros and special forms and adds support for nested indentation rules (so, for example, separate functionclojure-ts--match-method-body is not needed anymore).

I changed to format ofclojure-ts-semantic-indent-rules (hopefully it's OK for the version that has not been yet officially released) from(:block n) to((:block n)) or optionally((:block n) (:inner n)), which is more consistent with cljfmt format.
New format allows defining rules like("letfn" . ((:block 1) (:inner 2 0)))).

clojure-ts--dynamic-indent-for-symbol now converts not only top level rule, but the entire spec.

Before submitting a PR mark the checkboxes for the items you've done (if you
think a checkbox does not apply, then leave it unchecked):

• The commits are consistent with ourcontribution guidelines.
• You've added tests (if possible) to cover your change(s). Bugfix, indentation, and font-lock tests are extremely important!
• You've runM-x checkdoc and fixed any warnings in the code you've written.
• You've updated the changelog (if adding/changing user-visible functionality).
• You've updated the readme (if adding/changing user-visible functionality).

Thanks!