feat: Update AthenaColumn to parse array types

[jeancochrane]

Description

AthenaColumn is used to parse column metadata returned by Glue, particularly in AthenaAdapter.get_columns_in_relation(). The AthenaColumn.data_type property method is configured to convert a number of DDL data types to their DML equivalent (e.g. string ➡️ varchar), but it is not yet configured to convert array types, meaning that any code that consumes column definitions from get_columns_in_relation can raise errors like this one:

TYPE_MISMATCH: Unknown type: array<string>

This is causing problems for us as we begin adopting unit tests, since unit tests use get_columns_in_relation() in order to pull schema metadata for use in populating fixture data.

Models used to test - Optional

In addition to the unit tests I added as part of this PR, I manually tested this change against my team's dbt unit test suite to confirm that it resolves the TYPE_MISMATCH error. I'd be happy to pull together a minimal reproducible example if it would be useful.

Checklist

• You followed contributing section
• You kept your Pull Request small and focused on a single feature or bug fix.
• You added unit testing when necessary
• You added functional testing when necessary

[nicor88]

Overall looks good to me, also the unit test suite seems quite complete.

@Jrmyy or @svdimchenko would you like to have a a look?

[nicor88]

Great job @jeancochrane