Enhance employee stats view with completed bookings

Adds a new data table to employee detail stats showing completed bookings

Includes:
- Expanded EmployeeDetailStatsViewComponent with booking data
- Updated localization translations for new table labels
- Created mock booking data for demonstration
- Updated .gitignore to simplify temporary file handling

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

@@ -369,7 +369,17 @@
         "bookingsyear": "Bookinger i år",
         "revenueyear": "Omsætning i år",
         "avgrating": "Gns. rating",
-        "occupancy": "Belægningsgrad"
+        "occupancy": "Belægningsgrad",
+        "completedbookings": "Afsluttede bookinger",
+        "date": "Dato",
+        "time": "Tid",
+        "customer": "Kunde",
+        "services": "Services",
+        "duration": "Varighed",
+        "amount": "Beløb",
+        "status": "Status",
+        "paid": "Betalt",
+        "pending": "Afventer"
       },
       "settings": {
         "label": "Indstillinger",