Feature/v3/feature/rename investparameter optional to mandatory#392

FBumann merged 9 commits intofeature/v3/mainflixOpt/flixopt:feature/v3/mainfrom

feature/v3/feature/rename-investparameter-optional-to-mandatoryflixOpt/flixopt:feature/v3/feature/rename-investparameter-optional-to-mandatoryCopy head branch name to clipboard