* Use cosmossdk.io/errors for deprecated error methods
* Update error registration with cosmossdk.io/errors
* Use cosmossdk.io/math for deprecated sdk.Int alias
* Fix modified proto file
* Update sdk.Int usage in swap hooks
* Update e2e test deprecated method usage
* add total supply endpoint to x/liquid
* add test of x/liquid total supply query
* refactor x/savings test
* add total supply endpoint for x/savings (w/ test)
* add total supply endpoint for x/earn
* handle converting bkava to underlying staked amount
* aggregate bkava underlying values in x/earn
* aggregate underlying value of bkava in x/savings
* add empty grpc endpoint
* add basic implementation
* remove unbonding from returned balance
* fix test typo
* resolve todo, use better method from staking mod
