Add Translations from the Original Repo

[JakobDev]

There are a few PR's with Translations in the Original Repo. I think, it's time to merge it.

Credits:
dan200/ComputerCraft#365 by @manu-03
dan200/ComputerCraft#527 by @absolument
dan200/ComputerCraft#538 by @nothjarnan

[SquidDev]

Thanks for putting this together - I kept meaning to do something about these PRs, but then forgot. The langugage files have changed a little bit, so probably worth revisiting these first.

I've got in touch with @nothjarnan and @daelvn (author of dan200/ComputerCraft#488) to see if they want to review them. If any other French, Spanish, Swedish (or other languages!) want to drop in their opinions, feel free!

[SquidDev]

Thanks for putting these together :).

I've cherry picked the French and Spanish commits in manually, and northjarnan has PRed Swedish in. Doing it this way means they're picked up as contributors, and so appear on the credits & stats :).