* Add basic savings strategy
Supports ukava
* Use clearer error message for ErrInvalidVaultStrategy
* Add invariants
* Separate specific vault/all vaults query, update depositor inconsistencies
* Update swagger
* Use single bkava AllowedVault for all bkava variants
* Do not use allowedVault.Denom for value
* Fix vault balance query
* Update query to list bkava vaults
* Add vaults query doc
* Update grpc query test with no supply
* Add earn hooks
* Handle errors
* Update outdated doc comments, make getAllowedVault_Raw private
* Fix outdated comments, lints
* Fix comment maths
* Use AccAddressFromBech32 to validate message addresses
