[WIP] [T21231] Use nested tables to visualize Dynamic Matrix data

[Claude]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Use Nested Tables to visualize data of Dynamic Matrixes and Panels in Tabulator</issue_title>
<issue_description>* T21231 - Issue with Table View for Question Matrix Dynamic Row
https://surveyjs.answerdesk.io/internal/ticket/details/T21231

• T14028 - Tabular visualization of Dynamic matrix question's submitted response not proper
  https://surveyjs.answerdesk.io/internal/ticket/details/T14028
• T15486 - Showing dynamic panel contents on the dashboard table columns instead of JSON
  https://surveyjs.answerdesk.io/internal/ticket/details/t15486
• T9146 - SurveyJS Tabulator
  https://surveyjs.answerdesk.io/internal/ticket/details/T9146

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In the meantime, Dynamic Matrix and Panel responses cannot be properly visualized in a Tabulator. Perhaps, we may consider diplaying dynamic reponses in a nested table. Please refer to the corresponding Tabulator documentation and demo: Nested Tables.

</issue_description>

Comments on the Issue (you are @claude[agent] in this section)

@tsv2013 I've checked this thread - https://surveyjs.answerdesk.io/internal/ticket/details/T9146 - it looks like we've implemented customer requirement: > Thank you. The split functionality for matrix questions is working as per our requirements.

• Fixes Use Nested Tables to visualize data of Dynamic Matrixes and Panels in Tabulator #497

[tsv2013]

@claude[agent] Have you got how we create columns for complex surveyjs questions like matrix dynamic or panel dynamic? Do you understand to we can use tabulater nested tables to show matrix dynamic or panel dynamic content? Can you propose a set of unit or functional tests to create specs for this functionality?

[tsv2013]

@claude[agent] You can check the https://github.com/surveyjs/survey-analytics/blob/master/src/tables/columnbuilder.ts file to understand how table columns are being built. Can you propose a task solution using this information?

[tsv2013]

@claude[agent] Can you read this comment #497 (comment) and start to implement the feature step by step? Do you need any additional information? Where we can communicate about this feature?