* Managed API to handle User maintenance

* Managed Users view in application

OrdersManagement/Services/RoleService.cs

@@ -0,0 +1,41 @@
+using OrdersManagementDataModel.Dtos;
+
+namespace OrdersManagement.Services;
+
+public class RoleService(HttpClient httpClient)
+{
+    public async Task<IEnumerable<RoleDto>?> GetRolesAsync()
+    {
+        return await httpClient.GetFromJsonAsync<IEnumerable<RoleDto>>("api/Roles");
+    }
+    
+    public async Task<RoleDto?> GetRoleAsync(Guid roleId)
+    {
+        return await httpClient.GetFromJsonAsync<RoleDto>($"api/Roles/by-id/?id={roleId}");
+    }
+    
+    public async Task<RoleDto?> GetRoleByNameAsync(string roleName)
+    {
+        return await httpClient.GetFromJsonAsync<RoleDto>($"api/Roles/by-name/?name={roleName}");
+    }
+    
+    public async Task AddRoleAsync(RoleDto role)
+    {
+        await httpClient.PostAsJsonAsync("api/Roles", role);
+    }
+    
+    public async Task UpdateRoleAsync(RoleDto role)
+    {
+        await httpClient.PutAsJsonAsync("api/Roles", role);
+    }
+    
+    public async Task DeleteRoleAsync(Guid roleId)
+    {
+        await httpClient.DeleteAsync($"api/Roles/?id={roleId}");
+    }
+    
+    // public async Task<IEnumerable<UserDto>?> GetUsersInRoleAsync(Guid roleId)
+    // {
+    //     return await httpClient.GetFromJsonAsync<IEnumerable<UserDto>>($"api/Roles/{roleId}/Users");
+    // }
+}