* 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 savings support for bkava deposits
* Update savings tests with valid validator
* Add invalid bkava deposit test
* Remove test logs
* Add bkava withdraw test