First Public Widget beta

Added widgets #11 in material you style #132:

• Material you pill shaped current
• Hourly forecast
• Date + Current
• Wind widget

Other widget related

• Added background updates for widgets (should update every once an hour)
• Added configuration screen for widgets (select place and provider)

Translations from weblate

• New languages:
  • Finnish
  • Dutch
  • Urdu
  • Croatian
  • Chinese (Traditional) #146
• Lots of other translations

(This version is built from a totally new flutter project, because the old files were somehow corrupted resulting in a built apk of almost twice the previous size)