Switch to "lingui" for better DX.
Tried to persist existing languages as much as possible.
Removed "vite-plugin-node-polyfills" because it's incompatible with "lingui"
Caused issue for some languages, e.g., for all the different chinese languages, which are not all specified in the "IsoLanguages". These languages all incorrectly used the standard native chinese name which resulted in multiple different source groups with the same group name.
