feat: setup SvelteKit frontend with TypeScript

Implemented issue #9 - Frontend Project Setup with Svelte and TypeScript.

Changes:
- Created SvelteKit project with TypeScript
- Set up routing structure:
  - / (landing page)
  - /login
  - /register
  - /dashboard
  - /bot/[id]
  - /bot/[id]/backtest
  - /bot/[id]/simulate
  - /settings
- Created Svelte stores for state management:
  - userStore - Current user info
  - botsStore - List of user's bots
  - currentBotStore - Selected bot
  - chatStore - Chat messages
  - backtestStore - Backtest results
  - simulationStore - Simulation signals
  - authStore - Authentication state
- Created API client for backend communication
- Set up environment variables (.env.example)
- Created auth store with protected routes and login/register functionality

src/frontend/svelte.config.js

@@ -0,0 +1,17 @@
+import adapter from '@sveltejs/adapter-auto';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	compilerOptions: {
+		// Force runes mode for the project, except for libraries. Can be removed in svelte 6.
+		runes: ({ filename }) => (filename.split(/[/\\]/).includes('node_modules') ? undefined : true)
+	},
+	kit: {
+		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
+		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
+		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
+		adapter: adapter()
+	}
+};
+
+export default config;