* Managed API to handle User maintenance

* Managed Users view in application

OrdersManagement/Services/FunctionService.cs

@@ -0,0 +1,36 @@
+using OrdersManagementDataModel.Dtos;
+
+namespace OrdersManagement.Services;
+
+public class FunctionService(HttpClient httpClient)
+{
+    public async Task<IEnumerable<FunctionDto>?> GetFunctionsAsync()
+    {
+        return await httpClient.GetFromJsonAsync<IEnumerable<FunctionDto>>("api/Functions");
+    }
+    
+    public async Task<FunctionDto?> GetFunctionAsync(Guid functionId)
+    {
+        return await httpClient.GetFromJsonAsync<FunctionDto>($"api/Functions/by-id/?id={functionId}");
+    }
+    
+    public async Task<FunctionDto?> GetFunctionByNameAsync(string functionName)
+    {
+        return await httpClient.GetFromJsonAsync<FunctionDto>($"api/Functions/by-name/?name={functionName}");
+    }
+    
+    public async Task AddFunctionAsync(FunctionDto function)
+    {
+        await httpClient.PostAsJsonAsync("api/Functions", function);
+    }
+    
+    public async Task UpdateFunctionAsync(FunctionDto function)
+    {
+        await httpClient.PutAsJsonAsync("api/Functions", function);
+    }
+    
+    public async Task DeleteFunctionAsync(Guid functionId)
+    {
+        await httpClient.DeleteAsync($"api/Functions/?id={functionId}");
+    }
+}