Merge remote-tracking branch 'origin/release0123' into wjc

wjc

2022-03-02 a154c3ce81601e3c202d3c5f4d0a8cefc5a7e8ae

 UMSdk/ApiDefinition.cs

New file
@@ -0,0 +1,20 @@
using System;

using ObjCRuntime;
using Foundation;
using UIKit;

namespace UMSdk
{
   // @interface HDLUMSDK : NSObject
   [BaseType(typeof(NSObject))]
   [Protocol]
   interface HDLUMSDK
   {
      // +(void)initUMSDKWithAppKey:(NSString *)appKey channel:(NSString *)channel;
      [Static]
      [Export("initUMSDKWithAppKey:channel:")]
      void InitUMSDKWithAppKey(string appKey, string channel);
   }
}