Summary:
Add a linter to the YBA CLI project
Use `make fmt` in the root directory for formatting

Original commit: 6f439694fb97e69669180ca38d9d4f30258097e0 / D42103

Test Plan: Run `make fmt`

Reviewers: skurapati

Reviewed By: skurapati

Differential Revision: https://phorge.dev.yugabyte.com/D42130