feat: Electron support

[webJose]

Fixes #31

[Copilot]

Pull Request Overview

This PR adds Electron support to the router by handling Windows drive letters in file:// URLs. The key change introduces a sanitized path getter that strips drive letters from Electron file paths, ensuring consistent routing behavior across different environments.

• Adds a new path getter that sanitizes Windows drive letters from file:// URLs
• Updates internal routing logic to use the sanitized path instead of raw URL pathname
• Documents Electron usage requirements and setup instructions

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/lib/core/RouterEngine.svelte.ts	Adds path getter for Electron drive letter handling and updates routing logic
README.md	Documents Electron support and usage instructions

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}