Adding target gamma camera api

[hungpnv]

Hi, sorry for my bad English. I'm a newbie in AirSim and my skill in C++ is also suck. I want to add a new API in AirSim, which is the "TargetGamma" parameter in the "settings.json" to control it in Python script. I've read documents about adding new APIs. However, I can't add it in this situation. Has anyone tried this?