Add the following categories:
- Add/restore HSK (1992) aka HSK 1.0 categories
- Add/restore HSK (2010) aka HSK 2.0 level categories
- Add TBCL ( (20220920) level categories (#20)
- Add TOCFL (2023) level categories (#20)
None of these new/old categories are enabled by default, interested users will need to enable them in the add-on configuration.