Major refactor to decouple InfoPanel logic from grid base. Introduces MgGridWithInfoPanel wrapper component to manage grid and InfoPanel layout and communication. InfoPanels are now customizable via Razor templates with named slots (header, footer, etc.), and grid-to-InfoPanel communication is routed through the wrapper. Removes legacy C#-only InfoPanel base classes and parameters from grid base. This improves flexibility, composability, and maintainability of grid+InfoPanel UIs.
Introduce a flexible InfoPanel architecture for grid components, allowing per-grid customization via a new InfoPanelType parameter. Add MgInfoPanelTemplateBase for code-based InfoPanel templates with overridable header, content, and footer sections. Support custom templates in MgGridInfoPanel via new RenderFragment parameters. Add MgGridDataColumn for InfoPanel-specific column settings. Demonstrate usage with a custom InfoPanel for ShippingDocument grid. Maintains backward compatibility with default InfoPanel behavior.