feat(routing): configure after migration to standalone

[ddaribo]

Closes 3623

Adds minimal configuration needed to add routes to samples after the migration to standalone components.

Related igniteui-angular-samples PR here

[Copilot]

Pull Request Overview

This PR adds routing configuration support to standalone Angular components after migration from module-based architecture. It replaces the previous boolean router flag with a more comprehensive RoutesConfig interface that supports configurable routing paths.

• Introduced RoutesConfig interface with router boolean and routesImportPath string properties
• Updated template generation to conditionally import and use RouterOutlet based on routing configuration
• Modified app config generation to import routes from specified path when routing is enabled

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/templates/app.component.ts.template	Added conditional RouterOutlet import and component registration
src/public.ts	Replaced boolean router flag with RoutesConfig interface
src/generators/SampleAssetsGenerator.ts	Updated routing logic to use new RoutesConfig structure

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[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

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