[DEV(iOS) add cancel get available files api]
[DEV(iOS) add cancel get available files api]

pwkalana9/ARSDKBuildUtils,Parrot-Developers/ARSDKBuildUtils,Parrot-Developers/ARSDKBuildUtils,aoi/ARSDKBuildUtils,niavok/ARSDKBuildUtils,cvramire/ARSDKBuildUtils,niavok/ARSDKBuildUtils,149393437/ARSDKBuildUtils,cvramire/ARSDKBuildUtils,aoi/ARSDKBuildUtils,pwkalana9/ARSDKBuildUtils,149393437/ARSDKBuildUtils