Feature/external catalog config

[colin-rogers-dbt]

resolves #

Description

Checklist

• [ ] I have read the contributing guide and understand what's expected of me
• [ ] I have signed the CLA
• [ ] I have run this code in development and it appears to resolve the stated issue
• [ ] I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• [ ] I have run changie new to create a changelog entry

[github-actions[bot]]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 56 lines in your changes missing coverage. Please review.

Project coverage is 67.37%. Comparing base (60ffb06) to head (7fbac10). Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
dbt_common/events/common_types_pb2.py	0.00%	56 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #208 +/- ## ========================================== - Coverage 67.37% 67.37% -0.01% ========================================== Files 52 53 +1 Lines 3372 3445 +73 ========================================== + Hits 2272 2321 +49 - Misses 1100 1124 +24 ``` | [Flag](https://app.codecov.io/gh/dbt-labs/dbt-common/pull/208/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/dbt-labs/dbt-common/pull/208/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs) | `67.37% <0.00%> (-0.01%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dbt-labs#carryforward-flags-in-the-pull-request-comment) to find out more.

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