Intent: An android API to launch activities and services

New API for `lib/android` allowing to start/stop activities and services. Intent tests raised new subtle errors in `Bundle`API and `Audio` API that have been fixed in this PR. 
Attention aux char Java, ils font 16 bits ces cons, fait qu'a la conversion Nit, y'aura du trouble.

Solution : Créer un JavaChar qui serait équivalent à un uint16_t ?