Add translators to Co-Authored-By

**Is your feature request related to a problem? Please describe.**
When a translation PR comes through, it's attributed to just Crowdin Bot, which is a tad unfair on the actual translators.

**Describe the solution you'd like**
Use `Co-Authored-By` to attribute the actual people who worked on the translations.

**Describe alternatives you've considered**
Using the Last-Translator flag on the file, but that only attributes the latest author

**Additional context**
Translators are just as important to a project as a Developer is, by making use of the Co-Authored-By feature in git, we can give them some credit for their work.