Refactor array, structured and JSON expressions.

[Tigrov]

• Add ArrayExpressionBuilder, StructuredExpressionBuilder and JsonExpressionBuilder;
• Refactor ArrayExpression, StructuredExpression and JsonExpression;
• Implement lazy arrays for array, structured and JSON types;
• moved JSON type tests from db-sqlite, db-mysql, db-pgsql.

Related PRs

• Remove JsonExpressionBuilder and JSON type tests db-sqlite#337
• Remove JsonExpressionBuilder and JSON type tests db-mysql#376
• Refactor array, structured and JSON expression builders. db-pgsql#386
• Support JSON type db-mssql#342
• Support JSON type db-oracle#303
• Update tests according changes in db package active-record#402

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	✔️/❌
Fixed issues	#869, #892

[codecov]

Codecov Report

Attention: Patch coverage is 94.75524% with 15 lines in your changes missing coverage. Please review.

Project coverage is 99.26%. Comparing base (318ec5c) to head (165e79c).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...Expression/AbstractStructuredExpressionBuilder.php	80.00%	7 Missing ⚠️
src/Expression/AbstractArrayExpressionBuilder.php	72.22%	5 Missing ⚠️
src/Schema/Data/AbstractStructuredLazyArray.php	90.00%	2 Missing ⚠️
src/Schema/Data/AbstractLazyArray.php	94.44%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #929      +/-   ##
============================================
- Coverage     99.62%   99.26%   -0.36%     
- Complexity     1490     1539      +49     
============================================
  Files            81       98      +17     
  Lines          3689     3805     +116     
============================================
+ Hits           3675     3777     +102     
- Misses           14       28      +14     

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[samdark]

Does it affect docs in any way?

[samdark]

Overall 👍

[Tigrov]

Does it affect docs in any way?

It adds new features. I plan to add the docs later, after supporting custom type-casting.