Adds salary specifications with detailed accordion view

Introduces new salary specification feature with interactive accordion component

Implements detailed salary breakdown including:
- Salary specification JSON data model
- Salary specification page with printable view
- Accordion component for expanding/collapsing salary details
- Localization support for new salary labels

Enhances employee salary transparency and detail presentation

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

@@ -494,7 +494,19 @@
         "saturdaysupplementfull": "8-21 Saturdays (outside working hours)",
         "commission": "Commission calculation",
         "productcommissionfull": "Commission on product sales",
-        "servicecommissionfull": "Commission on service sales"
+        "servicecommissionfull": "Commission on service sales",
+        "specifications": "Salary specifications",
+        "week": "Week",
+        "normalhours": "Normal hours",
+        "overtimehours": "Overtime",
+        "vacationdays": "Vacation days",
+        "servicerevenue": "Services",
+        "productrevenue": "Products",
+        "minimumthreshold": "Minimum",
+        "total": "Total",
+        "weeklynorm": "Weekly norm",
+        "overtimemultiplier": "Overtime",
+        "minimum": "Minimum"
       },
       "hr": {
         "contractdocuments": "Contract & Documents",