Add dbt integration (similar to data-diff's)

[mimoyer21]

Is your feature request related to a problem? Please describe.
Passing through the DB URI for each diff is inconvenient when dbt already has a DB connection configured that could be used.

Describe the solution you'd like
I'd like to be able to conveniently run diffs on dbt models similar to data-diff's dbt integration without having to configure any DB connections (and instead just use the DB connection that is already configured for dbt).

Describe alternatives you've considered
Create some sort of scripts that are triggered by a make command to abstract away complexity so team members developing in dbt can diff as easily as they could with data-diff.

Additional context
I think not having this functionality is likely a big deterrent for many data-diff + dbt users migrating to reladiff.

[erezsh]

Hi @mimoyer21,

I have no objection to adding back the dbt integration, as a separate command, such as reladiff-dbt.

I didn't include the dbt integration of datadiff because I'm not familiar enough with dbt to review and fix the code. But if someone submits it as a PR, I will accept it, as long as the quality is sufficient.