Move project creation to service

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/observers/project_observer.rb

 class ProjectObserver < BaseObserver
   def after_create(project)
-    project.update_column(:last_activity_at, project.created_at)
-
-    return true if project.forked?
-
-    if project.import?
-      RepositoryImportWorker.perform_in(5.seconds, project.id)
-    else
-      GitlabShellWorker.perform_async(
-        :add_repository,
-        project.path_with_namespace
-      )
-
-      log_info("#{project.owner.name} created a new project \"#{project.name_with_namespace}\"")
-    end
-
-    if project.wiki_enabled?
-      begin
-        # force the creation of a wiki,
-        GollumWiki.new(project, project.owner).wiki
-      rescue GollumWiki::CouldNotCreateWikiError => ex
-        # Prevent project observer crash
-        # if failed to create wiki
-        nil
-      end
-    end
+    log_info("#{project.owner.name} created a new project \"#{project.name_with_namespace}\"")
   end
 
   def after_update(project)

app/services/projects/create_service.rb

@@ -58,6 +58,29 @@ module Projects
             user: current_user
           )
         end
+
+        @project.update_column(:last_activity_at, @project.created_at)
+
+        if @project.import?
+          RepositoryImportWorker.perform_in(5.seconds, @project.id)
+        else
+          GitlabShellWorker.perform_async(
+            :add_repository,
+            @project.path_with_namespace
+          )
+
+        end
+
+        if @project.wiki_enabled?
+          begin
+            # force the creation of a wiki,
+            GollumWiki.new(@project, @project.owner).wiki
+          rescue GollumWiki::CouldNotCreateWikiError => ex
+            # Prevent project observer crash
+            # if failed to create wiki
+            nil
+          end
+        end
       end
 
       @project