Feature 11862 include french tunisia

[MateStrysewske]

Fixes #11862

[sormas-vitagroup]

SonarCloud analysis: https://sonarcloud.io/dashboard?id=SORMAS-Project&pullRequest=11867

[ChristopherRiedel]

Do the language-specific files come from Crowdin then? And is there or should there be a fallback to "normal" French?

[MateStrysewske]

@ChristopherRiedel Yes to both. Languages already fall back to their non-regional variant, and then to English if that doesn't exist.