Hints for stratoshark in main

Warnings

• asv-screenshot-default-missing
  org.wireshark.Stratoshark.metainfo.xml:29 -
  No screenshot is marked as default.
• asv-tag-empty
  org.wireshark.Stratoshark.metainfo.xml:29 - screenshots
  The mentioned tag is empty, which is highly likely not intended as it should have content.
• asv-desktop-app-launchable-missing
  org.wireshark.Stratoshark.metainfo.xml -
  This `desktop-application` component is missing a `desktop-id` launchable tag. This means that this application can not be launched and has no association with its desktop-entry file. It also means no icon data or category information from the desktop-entry file will be available, which will result in this application being ignored entirely.