Implement `accounts/id/{staking-info, balance-info, vesting-info}` &...

Implement `accounts/id/{staking-info, balance-info, vesting-info}` & `pallets/staking/progress` (#248)

* balance-info

* update uri

* save

* save

* Add vesting service

* save

* save

* implement vesting

* update readme

* Update README.md

* updates test to reflect error messages

* add pallets/staking/progress

* pallets/staking/progress

* correct controller import

* export correction

* fix typo

* update readme

* Apply suggestions from code review

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

* update docs

* Update openapi

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