feat: Add staking::{chill, validate} and session::setKeys (#51)
* 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]>