Refactor `Boards::CreateService` to make it reusable for EE

app/services/boards/create_service.rb

 module Boards
   class CreateService < BaseService
+    prepend EE::Boards::CreateService
+
     def execute
-      if project.boards.empty?
-        create_board!
-      else
-        project.boards.first
-      end
+      create_board! if can_create_board?
     end
 
     private
 
+    def can_create_board?
+      project.boards.size == 0
+    end
+
     def create_board!
-      board = project.boards.create
+      board = project.boards.create(params)
+
+      if board.persisted?
         board.lists.create(list_type: :backlog)
         board.lists.create(list_type: :closed)
+      end
 
       board
     end

spec/services/boards/create_service_spec.rb

@@ -26,6 +26,8 @@ describe Boards::CreateService, services: true do
       end
 
       it 'does not create a new board' do
+        expect(service).to receive(:can_create_board?) { false }
+
         expect { service.execute }.not_to change(project.boards, :count)
       end
     end