Restructures project with feature-based organization

Refactors project structure to support modular, feature-driven development

Introduces comprehensive language localization support
Adds menu management with role-based access control
Implements dynamic sidebar and theme switching capabilities

Enhances project scalability and maintainability

app/Features/Language/Translations/da.json

@@ -0,0 +1,33 @@
+{
+  "menu": {
+    "home": "Dashboard",
+    "calendar": "Kalender",
+    "pos": "Kasse",
+    "products": "Produkter & Lager",
+    "suppliers": "Leverandører",
+    "customers": "Kunder",
+    "employees": "Medarbejdere",
+    "reports": "Statistik & Rapporter",
+    "settings": "Indstillinger",
+    "account": "Abonnement & Konto"
+  },
+  "groups": {
+    "dashboard": "Dashboard",
+    "data": "Data",
+    "analytics": "Analyse",
+    "system": "System"
+  },
+  "common": {
+    "save": "Gem",
+    "cancel": "Annuller",
+    "search": "Søg",
+    "close": "Luk",
+    "delete": "Slet",
+    "edit": "Rediger",
+    "add": "Tilføj"
+  },
+  "sidebar": {
+    "lockScreen": "Lås skærm",
+    "appName": "Salon OS"
+  }
+}