* Managed API to handle User maintenance

* Managed Users view in application

OrdersManagement/Services/UserService.cs

@@ -0,0 +1,36 @@
+using OrdersManagementDataModel.Dtos;
+
+namespace OrdersManagement.Services;
+
+public class UserService(HttpClient httpClient)
+{
+    public async Task<IEnumerable<UserDto>?> GetUsersAsync()
+    {
+        return await httpClient.GetFromJsonAsync<IEnumerable<UserDto>>("api/Users");
+    }
+
+    public async Task<UserDto?> GetUserAsync(Guid userId)
+    {
+        return await httpClient.GetFromJsonAsync<UserDto>($"api/Users/by-id/?id={userId}");
+    }
+
+    public async Task<UserDto?> GetUserByUsernameAsync(string username)
+    {
+        return await httpClient.GetFromJsonAsync<UserDto>($"api/Users/by-username/?username={username}");
+    }
+
+    public async Task AddUserAsync(UserDto user)
+    {
+        await httpClient.PostAsJsonAsync("api/Users", user);
+    }
+
+    public async Task UpdateUserAsync(UserDto user)
+    {
+        await httpClient.PutAsJsonAsync("api/Users", user);
+    }
+
+    public async Task DeleteUserAsync(Guid userId)
+    {
+        await httpClient.DeleteAsync($"api/Users/?id={userId}");
+    }
+}