Adds employee work schedule component

Introduces a new work schedule feature for managing employee shifts and schedules

Implements interactive schedule view with:
- Week-based schedule grid
- Shift status tracking (work, vacation, sick, off)
- Editable time ranges
- Repeat shift functionality

Enhances employee management with dynamic scheduling capabilities

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

@@ -271,11 +271,32 @@
       "tabs": {
         "general": "Generelt",
         "hours": "Arbejdstid",
+        "schedule": "Vagtplan",
         "services": "Services",
         "salary": "Løn",
         "hr": "HR",
         "stats": "Statistik"
       },
+      "schedule": {
+        "week": "Uge",
+        "hours": "timer",
+        "editShift": "Redigér vagt",
+        "status": "Status",
+        "work": "Arbejde",
+        "off": "Fri",
+        "vacation": "Ferie",
+        "sick": "Syg",
+        "timeRange": "Tidsrum",
+        "note": "Note",
+        "type": "Type",
+        "single": "Enkelt",
+        "repeat": "Gentagelse",
+        "repeatInterval": "Gentag",
+        "repeatEnd": "Slutdato",
+        "weekday": "Ugedag",
+        "buttonEdit": "Rediger",
+        "buttonDone": "Færdig"
+      },
       "contact": "Kontaktoplysninger",
       "personal": "Personlige oplysninger",
       "employment": "Ansættelse",