Support providing schemas for some columns in a table

[suvayu]

Related issues

Closes #67

Checklist

• I am following the contributing guidelines
• Tests are passing
• Lint workflow is passing
• Docs were updated and workflow is passing

[suvayu]

I can't replicate this locally:

Test Summary:              | Pass  Total  Time
Test convenience functions |    5      5  7.4s
Test Summary:     | Pass  Total  Time
Parsing utilities |   12     12  6.7s
Test Summary:             | Pass  Total  Time
Follow references in JSON |    4      4  1.1s
Test Summary: | Pass  Total  Time
Utilities     |    9      9  0.3s
Test Summary: | Pass  Total   Time
Read CSV      |   23     23  16.4s
Test Summary:    | Pass  Total  Time
Set table column |    7      7  5.7s
     Testing TulipaIO tests passed

The error is also a bit strange:

Execute of query "DESCRIBE rep_periods_mapping" failed: Catalog Error: Table with name rep_periods_mapping does not exist!
  Did you mean "pg_proc"?

I don't no where pg_proc could come from.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.86%. Comparing base (67a2d37) to head (5d9a148).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #68      +/-   ##
==========================================
+ Coverage   68.40%   68.86%   +0.46%     
==========================================
  Files           7        7              
  Lines         269      273       +4     
==========================================
+ Hits          184      188       +4     
  Misses         85       85              

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[datejada]

LGTM. Thanks for the PR!