[FEATURE] Add support to analyse DEX files directly

Hi,

We currently analysing a dropper APK which inject malware in form of a "DEX" code. We manage to extract the code and put in as a DEX file. We need to analyse it. Currently we zip the DEX file and rename it to APK file and drop it into MobSF. Request to have MobSF support to drop DEX file directly.

Thank you.