SNOW-1256916 implement structured arrays

[sfc-gh-pfus]

Description

SNOW-1256916 Implemented structured arrays

Checklist

• [ ] Created tests which fail without the change (if possible)
• [ ] Extended the README / documentation, if necessary

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 18.40000% with 204 lines in your changes are missing coverage. Please review.

Project coverage is 80.74%. Comparing base (5a81858) to head (ea200ac).

Files	Patch %	Lines
converter.go	17.94%	192 Missing :warning:
structured_type.go	0.00%	12 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1087      +/-   ##
==========================================
- Coverage   82.50%   80.74%   -1.76%     
==========================================
  Files          52       52              
  Lines       10201    10444     +243     
==========================================
+ Hits         8416     8433      +17     
- Misses       1785     2011     +226     

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