[DUX-2822] --verbose, --debug flags

[9999years]

Describe the feature you’d like to be implemented

--verbose and/or --debug flags should be shortcuts for --log-filter ghciwatch=debug,info or similar.

List alternatives to the feature and their pros and cons

Not doing that:
Pros:

• Less effort

Cons:

• Nobody knows what the exact syntax for log filtering is, it's a pain to find out, etc. etc.

_{From SyncLinear.com | DUX-2822}