[WIP] Implement financial portfolio grid sample

[Codex]

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>Financial Portfolio grid sample implementation</issue_title>
<issue_description>Implement a Financial Portfolio grid sample matching the design from Finance sample in webcomponents.

Design reference:

• Data grid for portfolio asset tracking, profit/loss analysis, with integrated charts for trends.
• Show key columns: asset, market, date, quantity, price, performance metrics, and calculated columns.
• Interactive features: sorting, filtering, column pinning, summary rows, and inline chart visualizations for dynamic data.
• Modern visual style, styled with Bootstrap/Light theme.
• Sample Design (WebComponents)

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• Theme: Bootstrap
• Mode: Light
• See also WebComponents repo for base implementation.</issue_description>

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

• Fixes Financial Portfolio grid sample implementation #4