Add log level API

[jolheiser]

A couple things to note:

• I added zerolog to the CLI so parsing (and possible error handling) can happen in the CLI instead of wasting the roundtrip to the server
  • Since the dep was added, I opted to change the output to use zerolog as well, let me know if you want it changed back
• I don't love the CLI implementation, willing to gather feedback. Particularly setting level with a flag, but I also didn't particularly like the alternative of checking for first arg either

It's a little awkward to think about log level because it can get conflated with "build logs" rather than "application logging".

[anbraten]

Nice work. Really like that it can be directly changed via cli as well. 👍🏾

Since the dep was added, I opted to change the output to use zerolog as well, let me know if you want it changed back

So we would switch to use zerolog for logging in the cli in a separate PR?

It's a little awkward to think about log level because it can get conflated with "build logs" rather than "application logging".

You already added some usage hints, so I think that's okay.

[jolheiser]

1. Moved the route to /api/log-level.
2. Fixed error handling in the CLI.
3. Changed the CLI so that no args gets the log level, otherwise first arg sets the log level.