Redesign card nav header

[ArtyomSavchenko]

Before:

After:

[huly-github-staging]

Connected to Huly®: UBERF-13952

[Copilot]

Pull Request Overview

This PR redesigns the navigation header for cards by replacing the previous NewCardHeader component with a new CardHeaderButton action component and introducing a new Application interface property to render header actions. Key changes streamline header actions and remove now-obsolete header creation logic.

• Added navHeaderActions property to Application for injecting an actions component.
• Replaced NewCardHeader with CardHeaderButton and removed the old component.
• Added CreateSpace and CardHeaderButton resources and updated model to use new create props and header actions.

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
plugins/workbench/src/types.ts	Adds navHeaderActions property to Application interface to support header action component.
plugins/workbench-resources/src/components/Workbench.svelte	Renders navHeaderActions component inside NavHeader slot.
plugins/card-resources/src/plugin.ts	Registers new components CreateSpace and CardHeaderButton; removes NewCardHeader.
plugins/card-resources/src/index.ts	Exposes new components and removes obsolete NewCardHeader export.
plugins/card-resources/src/components/navigator/NewCardHeader.svelte	Removes legacy header component no longer used.
plugins/card-resources/src/components/navigator/CardHeaderButton.svelte	Introduces new compact header actions button with popup menu.
models/card/src/index.ts	Updates model: adds createComponent/createLabel props and switches to navHeaderActions for header actions.