Add comprehensive documentation for ComplexTypes library (#3373)

* Initial plan

* Add comprehensive ComplexTypes documentation

Co-authored-by: romanett <[email protected]>

* Fix code review issues in ComplexTypes documentation

Co-authored-by: romanett <[email protected]>

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Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: romanett <[email protected]>

Author: Copilot