Performs a comprehensive project rename from 'barcode_scanner' to 'e_scan' (or 'eScan' for user-facing labels). This update spans all relevant files, including:
- Application IDs and bundle identifiers for Android, iOS, macOS, and Linux.
- VS Code launch configurations.
- Dart package import paths.
- Project names and titles in `pubspec.yaml`, `README.md`, and platform-specific configurations (e.g., CMakeLists, Info.plist, AndroidManifest).
Integrates `AppTheme` for consistent styling across the Reception page, affecting backgrounds, app bar, cards, and text.
Enhances `PrimaryButtonComponent` to support leading icons and centered content, and introduces `OutlineButtonComponent` for secondary actions, standardizing button usage.
Improves the AppBar by adding a drawer toggle and updating the title layout and styling. Removes the bottom navigation bar to streamline page navigation.
