Add GetGenesisValidatorsRoot (#122)

* change domain response (#109)

* regen proto

* Add proposer index

* Gen proto

* Update aggregation apis

* New pb

* update api for better usage

* Better definitions

* update proto files

* Add subscribe method for committee ID subnet (#118)

* Add SubscribeCommitteeSubnet and CommitteeSubnetSubscribeRequest

* Comments

* Update validator.proto

* Update `SubscribeCommitteeSubnets` to batch (#120)

* Update to batch

* Proto

* Rename Fork to ForkDefinition (#119)

Co-authored-by: Raul Jordan <[email protected]>

* Revert

* Merge conflict

* Multiple Proposer Slots for Duties (#121)

* apply items

* multiple proposers

* workspace changes

* no space

* Add GetValidatorsRoot

* resolve confs

* regen

Co-authored-by: Nishant Das <[email protected]>
Co-authored-by: Terence Tsao <[email protected]>
Co-authored-by: Raul Jordan <[email protected]>