SQL arrays and multisets could be nested

[snuyanzin]

Yes these things could be nested
e.g. this Schema

Schema.of(field("ints_ints", () -> new int[][]{new int[]{1}, null, new int[] {3, 4, 5}}))

allows to generate something like that

INSERT INTO "MyTable" ("ints_ints") VALUES (ARRAY[ARRAY[1], NULL, ARRAY[3, 4, 5]]);

and this one

Schema.of(field("array_multiset", () -> Collections.singletonList(Collections.singleton("value"))))

could help with generation of mix

INSERT INTO "MyTable" ("array_multiset") VALUES (ARRAY[MULTISET['value']]);

[codecov-commenter]

Codecov Report

Merging #492 (f8f9404) into main (678c8b1) will increase coverage by 0.03%.
The diff coverage is 65.71%.

@@             Coverage Diff              @@
##               main     #492      +/-   ##
============================================
+ Coverage     92.86%   92.89%   +0.03%     
- Complexity     2163     2174      +11     
============================================
  Files           234      234              
  Lines          4581     4603      +22     
  Branches        487      492       +5     
============================================
+ Hits           4254     4276      +22     
- Misses          206      207       +1     
+ Partials        121      120       -1     

Impacted Files	Coverage Δ
.../net/datafaker/transformations/SqlTransformer.java	83.83% <65.71%> (+0.22%)	⬆️
.../java/net/datafaker/service/FakeValuesService.java	87.36% <0.00%> (+0.64%)	⬆️

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