Adds comprehensive customers list and management components

Introduces customer-related view components for table and row display
Implements mock data loading and customer list rendering
Adds localization support for customer-related text
Enhances UI with detailed customer information and interactions

PlanTempus.Application/Features/Customers/Components/CustomerRow/CustomerRowViewComponent.cs

@@ -0,0 +1,11 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace PlanTempus.Application.Features.Customers.Components;
+
+public class CustomerRowViewComponent : ViewComponent
+{
+    public IViewComponentResult Invoke(CustomerItemViewModel customer)
+    {
+        return View(customer);
+    }
+}