Include <string> in generated hpp files
Include <string> in generated hpp files

This is needed to use std::string.

Suggested-by: include-what-you-use

vladistan/autorevision,dak180/autorevision,Autorevision/autorevision,dak180/autorevision,vladistan/autorevision,dak180/autorevision,Autorevision/autorevision,Autorevision/autorevision,vladistan/autorevision