[Git] Added some files and directories to ignore (because generated).
[Git] Added some files and directories to ignore (because generated).

airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv,airsim/airinv