Adds CnCard component and enhances UI features

[SudoThijn]

Introduces CnCard, a new generic, prop-driven card component for displaying entities with a title, icon, description, labels, and stats. This component offers explicit control over its properties, serving as a flexible alternative for fixed-structure entities, differentiating it from schema-driven cards.

Enhances CnStatusBadge with a solid prop, allowing badges to display with a solid background and white text. This improves visibility and aesthetic integration when badges are placed on colored backgrounds, such as within an active CnCard.

Improves CnFormDialog by adding support for enumLabels within fieldOverrides. This enables the display of human-readable labels for enum dropdown options, enhancing the user experience in schema-driven forms.

Adds an openDeleteDialog public method to CnIndexPage, providing a programmatic way to trigger the single-item deletion dialog.