Add default values of new properties to JSON files on CentralDogma when they are supported

[ta7uw]

Currently, CentralDogmaPropertySupplier#register creates a default property file if it doesn't exist on CentralDogma.
Only the properties that exist at the time are included, so when new properties are supported, they will not be included in the files.

I guess it is useful that when new properties are supported, their default values will be added to JSON files on CentralDogma.

[Yang-33]

It might be convenient, but it likely depends on how decaton users manage their Central Dogma files. If they use Central Dogma's Git mirroring, having decaton automatically create (push) files or push some changes to Central Dogma would cause differences with the source/original Git repository.