Update gitignore rules to exclude /out folder from versioning
Update gitignore rules to exclude /out folder from versioning

The out/ folder is created and managed by Intellij IDEA.

yinan-liu/scheduling,paraita/scheduling,laurianed/scheduling,laurianed/scheduling,laurianed/scheduling,sgRomaric/scheduling,ShatalovYaroslav/scheduling,zeineb/scheduling,lpellegr/scheduling,mbenguig/scheduling,mbenguig/scheduling,marcocast/scheduling,zeineb/scheduling,zeineb/scheduling,fviale/scheduling,ow2-proactive/scheduling,tobwiens/scheduling,lpellegr/scheduling,yinan-liu/scheduling,jrochas/scheduling,tobwiens/scheduling,yinan-liu/scheduling,jrochas/scheduling,sgRomaric/scheduling,jrochas/scheduling,mbenguig/scheduling,lpellegr/scheduling,ShatalovYaroslav/scheduling,laurianed/scheduling,ShatalovYaroslav/scheduling,laurianed/scheduling,paraita/scheduling,zeineb/scheduling,jrochas/scheduling,fviale/scheduling,ow2-proactive/scheduling,sgRomaric/scheduling,yinan-liu/scheduling,paraita/scheduling,zeineb/scheduling,fviale/scheduling,mbenguig/scheduling,jrochas/scheduling,lpellegr/scheduling,marcocast/scheduling,yinan-liu/scheduling,marcocast/scheduling,ow2-proactive/scheduling,fviale/scheduling,laurianed/scheduling,zeineb/scheduling,ShatalovYaroslav/scheduling,lpellegr/scheduling,tobwiens/scheduling,sgRomaric/scheduling,sgRomaric/scheduling,marcocast/scheduling,zeineb/scheduling,jrochas/scheduling,tobwiens/scheduling,paraita/scheduling,sgRomaric/scheduling,paraita/scheduling,ow2-proactive/scheduling,ShatalovYaroslav/scheduling,lpellegr/scheduling,ShatalovYaroslav/scheduling,tobwiens/scheduling,marcocast/scheduling,marcocast/scheduling,fviale/scheduling,mbenguig/scheduling,ShatalovYaroslav/scheduling,tobwiens/scheduling,ow2-proactive/scheduling,mbenguig/scheduling,tobwiens/scheduling,marcocast/scheduling,lpellegr/scheduling,yinan-liu/scheduling,fviale/scheduling,fviale/scheduling,ow2-proactive/scheduling,laurianed/scheduling,paraita/scheduling,jrochas/scheduling,sgRomaric/scheduling,yinan-liu/scheduling,mbenguig/scheduling,ow2-proactive/scheduling,paraita/scheduling