feat: support nested array schema

[Yisaer]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 30.76923% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 63.48%. Comparing base (739758e) to head (ec74a77).
Report is 2 commits behind head on master.

Files	Patch %	Lines
internal/xsql/parser.go	30.77%	6 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2734      +/-   ##
==========================================
- Coverage   63.54%   63.48%   -0.05%     
==========================================
  Files         339      339              
  Lines       38932    38945      +13     
==========================================
- Hits        24737    24724      -13     
- Misses      12031    12055      +24     
- Partials     2164     2166       +2     

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