2021-08-20 1.增加IOS SDK相关接口对接

JLChen

2021-08-20 d82c74ca2e845211c95b314134bf7d0ea80e45f7

 HDL-ON_iOS/Scan.cs

@@ -35,7 +35,6 @@
                var bOn = false;
                mZXingOverlayView.OnCancel += () =>
                {

                    scanner?.Cancel();
                };