feat: Allow extension packages to disallow routing modes

[webJose]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces functionality to allow extension packages to disallow specific routing modes (path, hash, or multi-hash routing) through configuration options. It implements validation that throws errors when restricted routing modes are used.

• Adds new ExtendedRoutingOptions type with disallow flags for each routing mode
• Creates assertAllowedRoutingMode utility function to validate routing mode usage
• Integrates validation into all routing components to enforce restrictions

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/lib/utils.ts	New utility function to validate allowed routing modes
src/lib/utils.test.ts	Test coverage for the routing mode assertion function
src/lib/types.ts	Extended type definitions for routing options with disallow flags
src/lib/core/options.ts	Updated routing options handling to support disallow flags
src/lib/core/options.test.ts	Added tests for new routing option defaults
src/lib/core/initCore.ts	Updated to accept extended initialization options
src/lib/core/RouterEngine.svelte.ts	Integrated routing mode validation in router engine
src/lib/core/RouterEngine.svelte.test.ts	Added comprehensive tests for routing mode restrictions
src/lib/RouterTrace/RouterTrace.svelte	Added validation before router context resolution
src/lib/Route/Route.svelte.test.ts	Test coverage for routing restrictions in Route component
src/lib/Route/Route.svelte	Integrated validation in Route component initialization
src/lib/Link/Link.svelte.test.ts	Added tests for Link component routing restrictions
src/lib/Link/Link.svelte	Added validation in Link component
src/lib/Fallback/Fallback.svelte.test.ts	Test coverage for Fallback component restrictions
src/lib/Fallback/Fallback.svelte	Integrated validation in Fallback component

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