[Feature] Adding a check_exclude_cols option to the check snapshot strategy.

[willmaclean]

Is this your first time submitting a feature request?

• I have read the expectations for open source contributors
• I have searched the existing issues, and I could not find an existing issue for this feature
• I am requesting a straightforward extension of existing dbt-adapters functionality, rather than a Big Idea better suited to a discussion

Describe the feature

The dbt-adapters side of this. I have a PR incoming for it, but raising the issue first for the changelog.

Describe alternatives you've considered

No response

Who will this benefit?

No response

Are you interested in contributing this feature?

Yes

Anything else?

No response