feat: add domain models and repositories for user, spool presets, and filaments

- Introduced SpoolPreset and User domain models with necessary DTOs and utility functions.
- Created AuthRepository, FilamentRepository, and SpoolPresetRepository interfaces for authentication and data management.
- Implemented UI components for filament display, including ColorSwatch, FilamentCard, and StockBar.
- Developed layout components such as Header and Screen for consistent app structure.
- Added reusable UI components like Badge, Button, Card, and Input for better user interaction.
- Established global constants and theme settings for consistent styling across the application.
- Implemented utility functions for filament calculations and formatting.
- Created Zustand stores for managing authentication, filament, and preset states.
- Configured TypeScript settings for improved development experience.

mobile/metro.config.js

@@ -0,0 +1,7 @@
+// Learn more https://docs.expo.io/guides/customizing-metro
+const { getDefaultConfig } = require('expo/metro-config');
+
+/** @type {import('expo/metro-config').MetroConfig} */
+const config = getDefaultConfig(__dirname);
+
+module.exports = config;