Add eventDocs & extrinsicDocs query params to /blocks (#260)

* Add eventDocs & extrinsicDocs query params to /blocks

clean up types

Fix issues with event method

Remove dead space

remove console logs

introduce eventDocs query parm

Update controller docs

add extrinsic docs

remove comment

update variable name

remove commented out code

* update so tests pass

* Map & join docs

* Refactor to private function, and not new line as last char

* Fix typo in controller

* Apply suggestions from Joe's code review

Co-authored-by: joe petrowski <[email protected]>

Co-authored-by: joe petrowski <[email protected]>