feat: Add support for Map type in SQL

[nuno-faria]

Which issue does this PR close?

• Closes Add support for Map type in SQL #24396.

Rationale for this change

Support the Map type directly in SQL, e.g., when creating tables.

What changes are included in this PR?

The sql-parser DataType::Map is now converted to the arrow type DataType::Map.

Are these changes tested?

Yes

Are there any user-facing changes?

New SQL type.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.18%. Comparing base (16b08db) to head (dc06353).

Files with missing lines	Patch %	Lines
datafusion/sql/src/planner.rs	71.42%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #24397      +/-   ##
==========================================
- Coverage   81.18%   81.18%   -0.01%     
==========================================
  Files        1110     1110              
  Lines      388906   388913       +7     
  Branches   388906   388913       +7     
==========================================
- Hits       315741   315736       -5     
- Misses      54571    54576       +5     
- Partials    18594    18601       +7     

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[jayzhan211]

Thanks @nuno-faria and @Jefffrey