Move apps to mobile directory structure

Relocated all app directories (client, design_system_viewer, staff) and their contents under the new 'apps/mobile' path. This change improves project organization and prepares for future platform-specific structuring.

apps/mobile/packages/design_system/pubspec.yaml

@@ -0,0 +1,31 @@
+name: design_system
+description: "A new Flutter package project."
+version: 0.0.1
+homepage:
+resolution: workspace
+
+environment:
+  sdk: ^3.10.7
+  flutter: ">=1.17.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  google_fonts: ^7.0.2
+  lucide_icons: ^0.257.0
+  font_awesome_flutter: ^10.7.0
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^6.0.0
+
+# For information on the generic Dart part of this file, see the
+# following page: https://dart.dev/tools/pub/pubspec
+
+# The following section is specific to Flutter packages.
+flutter:
+
+  # To add assets to your package, add an assets section, like this:
+  assets:
+    - assets/