Hints for crow-translate in main

Warnings

• asv-developer-id-invalid
  org.kde.CrowTranslate.metainfo.xml:21 - org.KDE
  The developer-ID is invalid. It should be an rDNS string identifying the developer, or a Fediverse handle. It must also only contain lowercase ASCII letters, numbers and punctuation.
• translations-not-found
  Unable to add languages information, even though a translation tag was present in the MetaInfo file. Please check that its value is set correctly, and all locale files are placed in the right directories (e.g. /usr/share/locale/*/LC_MESSAGES/ for Gettext .mo files).