Implement DataDB: ClientDB (dbc/db2) files are saved in a new database now. Please use the ClientDBExtractor from tools repo.

Implement character creation:

- Start spells & skills are used from SkillLineAbility table (not 100% implemented).
- Custom start spells & skills are ignored for now.
- Start items needs to be implemented.

Implement character deletion:

- Restore system not implemented.

Some other improvements, fixes & new classes/enums.