Svelte SDK Intro example project. (#31)
* Initialize Svelte project with basic structure and components * Remove unused UI image from launchdarkly-svelte-sdk-intro * Refactor README and enhance project setup; add LoadingSpinner and MoviesSmartAssistant components * Update README to include NVM usage instructions for Node.js setup * Refactor flag handling in +page.svelte to improve clarity and maintainability * Remove debug log for LD context in +layout.svelte * improve docs