Fix for including files in Windows.
Fix for including files in Windows.

agwe/jolie,mawolf/jolie,innopolis-jolie-smt-typechecker/jolie,agwe/jolie,jolie-projects/jolie-async,innopolis-jolie-smt-typechecker/jolie,jolie-projects/jolie-async,mawolf/jolie,jolie-projects/jolie-async,innopolis-jolie-smt-typechecker/jolie,agwe/jolie,mawolf/jolie,innopolis-jolie-smt-typechecker/jolie,agwe/jolie,mawolf/jolie,jolie-projects/jolie-async