[feature] Exposing more info through mapping.json

[yotamN]

There is still more info that could be exposed through mapping.json like field types, access flags and most importantly the corresponding line on the decompiled code.

[skylot]

@yotamN mapping.json supposed to be just index for quick search of needed class/method and next go to class specific json file for additional info like access flags and code. I don't want to add much data into mapping.json because it becomes very big for large apk files.

field types

Should be in class json file, but I just notice I forget to fill that field. Sorry 😞