added script which checks setup, and gives instructions how to fix missing stuff
added script which checks setup, and gives instructions how to fix missing stuff

daukantas/factlink-core,daukantas/factlink-core,daukantas/factlink-core,Factlink/factlink-core,Factlink/factlink-core,Factlink/factlink-core,daukantas/factlink-core,Factlink/factlink-core