Add fr_fr.json

[p-sage]

Add French translation!

[EnnuiL]

Hi! While I haven't reviewed the quality of the translation yet, do note that what I've said on #165 still holds true: I can merge it, but the translation will be incomplete since the next update is going to be one that changes a lot of text

I can either merge this for the next immediate update or I can wait so you can cover everything

[p-sage]

Hello! If the next update is presumably a big update that will change a lot of text, then maybe it's better to wait for it to have the new strings translated.

Would it be possible to be notified when the strings are available for translation, before releasing the update? I will make sure to work on it as soon as possible.

[p-sage]

Hello!

I made a new PR (#169) to take into account the new strings of the next update (dev/rebirth_2 branch). Feel free to close this PR if needed!

[EnnuiL]

Hello! If the next update is presumably a big update that will change a lot of text, then maybe it's better to wait for it to have the new strings translated.

Would it be possible to be notified when the strings are available for translation, before releasing the update? I will make sure to work on it as soon as possible.

@p-sage I believe this update is ready to receive translations now, I don't plan on changing anything further than internal things

Closing this PR since you opened a new one (#169)