chore: clarify where files should be stored.

[Jason3S]

Description

Clarify that dictionary/*/dict files are generated and should not be edited.

[nschonni]

Does it make sense to add these to the .gitignore and then use a force add for the parts that do the generation?

[Jason3S]

@nschonni,

I decided to keep a copy of the compiled dictionaries in dict. This is to help catch issues with tool changes that make changes to how dictionaries are compiled. The files tend to be small compared to the Natural language dictionaries.