Add signatures to Katanga [Risolto]

Katanga is missing signatures and here I have tried adding them.

Note: Two issuing entities aren't yet in the database. requested here: https://en.numista.com/forum/topic166718.html

Spreadsheet with data:

https://docs.google.com/spreadsheets/d/1mBGi56D9cbbZbpRbuhDL-zjc-Ye2jMTnmUDJxW37Bvc/edit?gid=917486574#gid=917486574

The folder with everything:

https://drive.google.com/drive/folders/158-Dqqslf9alf3UqlhZAIedKSrfZ37Bv?usp=sharing

Thanks :D

Hello.

The signatures on the Bank of Republic of Katanga page are not actually signatures; they are merely representations. The others have been added.

Thank you!