2020-07-02 1.更新最新SDK。 2.参试封装工具类，只初始化一次SDK方案，暂时解决SDK无法释放问题。

JLChen

2020-07-02 fac61655d3d255468491d0829c8814c0cf0a62dd

 xamarin/Shared.IOS.ESVideoPhoneSDK/ApiDefinition.cs

@@ -128,5 +128,34 @@
        [Export("collectButtonCallBack", ArgumentSemantic.Copy)]
        CollectButtonCallBack CollectButtonCallBack { get; set; }
    }



    // @interface ESVideo : NSObject
    [BaseType(typeof(NSObject))]
    interface ESVideo
    {
        //// @property (nonatomic, strong) int * _Nonnull es;
        //[Export("es", ArgumentSemantic.Strong)]
        //unsafe int* Es { get; set; }

        //// @property (copy, nonatomic) int snapImageCallback;
        //[Export("snapImageCallback", ArgumentSemantic.Copy)]
        //int SnapImageCallback { get; set; }

        // +(instancetype _Nonnull)shareInstance;
        [Static]
        [Export("shareInstance")]
        ESVideo ShareInstance();

        // +(void)haltSharedInstance;
        [Static]
        [Export("haltSharedInstance")]
        void HaltSharedInstance();

        // -(void)initSDK;
        [Export("initSDK")]
        void InitSDK();
    }
}