Add verbosity to client CLI

### Check existing issues

- [x] I've verified that this request isn't described by any existing issues.

### Request

There should be some verbose flags in the client so users can see what hwctl is doing/sending. Based on the Canonical CLI standards, I think the following levels might be useful with a `--verbosity=` option:

- `brief`: Default and current behavior. Also provide a `--brief` flag (not sure if this is useful/required if `brief` is the default behavior)
- `verbose`: Describe the steps that hwctl is taking, but do not show blobs/body of what it's sending. Also provide a `--verbose` flag
- `trace`: Show what hwctl is doing and sending

### Motivation

This is to align with the Canonical CLI standards and provide more visibility to users on what hwctl is doing.