Adds Online Booking configuration and preview components

Introduces comprehensive online booking feature with:
- Localization support for booking settings
- ViewComponents for booking URL, settings, company info, hours, and preview
- Responsive preview with device toggle functionality
- Integrated with settings page and translation files

Enhances application's online booking configuration interface

PlanTempus.Application/Features/Localization/Translations/da.json

@@ -707,5 +707,60 @@
         "noData": "Ingen økonomiske data tilgængelige"
       }
     }
+  },
+  "onlineBooking": {
+    "title": "Online Booking",
+    "subtitle": "Konfigurer og preview din booking-side",
+    "status": {
+      "active": "Aktiv",
+      "inactive": "Inaktiv"
+    },
+    "url": {
+      "title": "Booking URL",
+      "copy": "Kopiér",
+      "open": "Åbn i ny fane"
+    },
+    "settings": {
+      "title": "Booking-indstillinger",
+      "enableBooking": "Aktivér online booking",
+      "enableBookingDesc": "Tillad kunder at booke tider online",
+      "bookAhead": "Book frem i tiden",
+      "minNotice": "Minimum varsel",
+      "cancelDeadline": "Aflysningsfrist"
+    },
+    "company": {
+      "title": "Virksomhedsoplysninger",
+      "edit": "Rediger",
+      "name": "Navn",
+      "address": "Adresse",
+      "zipCity": "Postnr + By",
+      "phone": "Telefon",
+      "email": "Email"
+    },
+    "hours": {
+      "title": "Åbningstider",
+      "edit": "Rediger",
+      "closed": "Lukket"
+    },
+    "preview": {
+      "title": "Preview",
+      "desktop": "Desktop",
+      "tablet": "Tablet",
+      "mobile": "Mobil"
+    },
+    "allSettings": "Alle indstillinger"
+  },
+  "settings": {
+    "title": "Indstillinger",
+    "tabs": {
+      "company": "Virksomhed",
+      "calendar": "Kalender",
+      "booking": "Online Booking",
+      "billing": "Faktura & Kvittering",
+      "reminders": "Påmindelser",
+      "payments": "Betalinger",
+      "modules": "Moduler",
+      "tracking": "Tracking"
+    }
   }
 }