Add project to TigaseSwift library workspace created during preparation of environment for development using @Add Files to "workspace_name"…​@ from @File@ menu of XCode when workspace is opened in XCode.

Select XCode project file of your newly created project and click Add

This file name will end with .xcodeproj

Select TigaseSwift.framework and add it to project

It will be located in Products folder of TigaseSwift project