Add script to verify translation data in translations

[Mia]

For example, this should throw an error:

#: src/pages/Organizations/OrganizationNamespaceContactEdit.tsx:189
#: src/pages/Workshops/components/WorkshopBookingExplanation.tsx:34
msgid "Example link: <example />"
msgstr "Exempellänk: <exempel />"

example mismatches exempel.

We could also consider making a warning if spacing differs eg. Hello {name} and Hej{name}... although I suppose some languages that might be different rules so it might be tricky.

This script could be added in the react-i18n repo as well for other's convenience.