(Minor) CC_preset Needs Refactor

`CC_preset::type` wasn't fully implemented in an OOP compliant manner, and leaves behind a code smell.

The type shouldn't change between `hardcode` (not modifiable by users), `tbl` (.tbl defined, modifiable by campaign designers), or `pst` (.pst defined, modifiable by players). However, during duplication of a preset, a `hardcode` or `tbl` preset may be copied into a `pst` type.