Some configuration files are encoded in SJIS.

# Requirement

### Target
- https://github.com/OpenTouryoProject/OpenTouryo/blob/develop/root/programs/CS/Frameworks/Tools/DaoGen_Tool/appsettings.json
- https://github.com/OpenTouryoProject/OpenTouryo/blob/develop/root/programs/CS/Frameworks/Tools/DPQuery_Tool/appsettings.json
- ,etc.

### Survey Tool
[FCChecker](https://www.vector.co.jp/soft/dl/winnt/util/se478635.html)