Financial Portfolio grid sample implementation

[dkamburov]

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.