Adding the Android-IMSI-Catcher-Detector (AIMSICD)

Hey @E3V3A, let's celebrate my very first pull request! :smiley_cat: 
This one solves #1020. Thanks for adding it in, @Zegnat!
@nylira, since this is my very first pull request, I'd be happy if you could re-check if I added the category "Cellular" appropriately as you suggested in [your comment here](https://github.com/nylira/prism-break/issues/1020#issuecomment-47182850). Thanks for adding us to your awesome site!