[CT-1627] [Spike] Identify requirements for structured logging in dbt-server

[leahwicz]

Describe the feature

The result of this spike should be a list of issues that we have to go do to support dbt-server using structured logging

[jtcohen6]

Some in-progress conversation over in dbt-labs/dbt-server#131

[jtcohen6]

@peterallenwebb Would you consider this one resolved, given the conversations we had with @racheldaniel and the flexible callback implementation added in #6291?

[peterallenwebb]

Yes, we've provided runtime with what they should need for 1.4, so I'll close this.