Feature/add i18n

[dharzheim]

No description provided.

[michaelschoenbaechler]

Thanks for your contribution. I’m looking forward to see it available in all official languages. Transloco was a great choice.

A few open questions:

• Was it intentional to not fetch language-specific data from the API? For example, using a filter like { Language: lang } in services?
• Is it okay not to use the official translations from parlament.ch? For instance, business.detailText translates Motionstext as Texte animé, which doesn’t seem right, since a motion should still be called a motion (see: https://www.parlament.ch/fr/ratsbetrieb/suche-curia-vista).
• Do we need simple-git? Was there a problem reading the file with fs?
• Is there a way to detect the default language based on the device settings?

[michaelschoenbaechler]

please squash before merge