[CT-1239] [Feature] Allow partitions in external tables to be supplied as a list

[pgoslatara]

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 functionality, rather than a Big Idea better suited to a discussion

Describe the feature

Partitions in external tables can be supplied as a list (currently a name and data type are the minimum requirements).

Describe alternatives you've considered

Supplying a list of partitions with name and data_type values is superfluous, especially the data_type as this is not used. While specifying the partitions in this way works, it is not a great user experiences.

Who will this benefit?

Users of the dbt-external-tables package that have a Spark/Databricks connection.

Are you interested in contributing this feature?

Yes.

Anything else?

Background can be found in this comment on a PR for dbt-external-tables.

[lostmygithubaccount]

hi @pgoslatara, thanks for opening this issue and the corresponding PR to fix! we'll get that reviewed and get back to you with any requested changes through the PR