[Feature] Add debugging information to make it easier to identify issues in dbt-loom operation.

[nicholasyager]

Is your feature request related to a problem? Please describe.
Certain environments can be tricky to troubleshoot errors in dbt-loom configuration or manifest access. To make it easier to troubleshoot, it would be extremely helpful to have debugging logs available during dbt-loom's operations.

Describe the solution you'd like
I'd like debug logs to be added for all IO occurring with dbt-loom, and errors to be raised whenever there are problems. This should be done using dbt-core's built in logging handlers, so the events are added to the dbt-core debug log file.

Describe alternatives you've considered
0. We don't. This would leave this problem in place and potentially make adoption more difficult.

1. Use some other logging approach.
2. Print debugging (Lol. no.)

Additional context
A discussion about this functionality can be found here: #100