* feat: Add chill and validate in staking

* feat: Add session setKeys

* FIx lint and test

* Update src/methods/staking/chill.ts

Co-Authored-By: joe petrowski <[email protected]>

* Update src/methods/staking/validate.ts

Co-Authored-By: joe petrowski <[email protected]>

* Run yarn docs

* Perbill

* Docs

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