updated nuxt to 3.4.3 and nuxt/i18n to newest beta-12. adapted new i18n...

What I did

• updated nuxt to 3.4.3
• nuxt/i18n to newest beta-12.
• adapted new i18n config
• added yaml parser to vite plugins

The problem I faced was that the yaml language files couldn't be read. It seems that the current i18n beta does not automatically add yaml support into the build process. That's why I added in the nuxt.config explicit the yaml-parser plugin to vite. using this the build process works as expected.

Please @lucas.kulla , @steinm01 , @gabriel.preuss have a look if this MR works for you. If you approve it I will remove the "draft" mark.

issue #29 (closed)