[IMPROVEMENT] Show used data volume of the sim connection

[jamakr4]

Is your feature request related to a problem? Please describe.
Show used data volume of the sim connection - as there is no option to view this anywhere in the OEM MG Launcher etc..

Describe the solution you'd like
Just a simple number of how much mb have already been used this month

Describe alternatives you've considered
I don't know if this can be viewed in the Android settings but I can't check it right now as I don't have access to my car for another week.

[SliDeeN]

It seems to me that this information is available in the AAOS under the "Network" section.
I'll check that as soon as I have a little time and see if it's documented or not so I can report it in MG4Control.