Extra data send from iOS to Flipper Desktop

Summary: Added `extraInfo` for node descriptor for ios. Analogical to android node descriptor

Reviewed By: cuva, Andrey-Mishanin

Differential Revision: D23105947

fbshipit-source-id: f21541e97d79c0009815f94e733a056320324459

iOS/Plugins/FlipperKitLayoutPlugin/SonarKitLayoutPluginTests/SonarKitLayoutPluginTests.m

@@ -54,6 +54,7 @@
     @"children" : @[],
     @"attributes" : @[],
     @"data" : @{},
+    @"extraInfo" : @{},
     @"decoration" : @"",
   }]));
 }
@@ -114,6 +115,7 @@
         @"children" : @[],
         @"attributes" : @[],
         @"data" : @{},
+        @"extraInfo" : @{},
         @"decoration" : @"",
       },
       @{
@@ -122,6 +124,7 @@
         @"children" : @[],
         @"attributes" : @[],
         @"data" : @{},
+        @"extraInfo" : @{},
         @"decoration" : @"",
       },
       @{
@@ -130,6 +133,7 @@
         @"children" : @[],
         @"attributes" : @[],
         @"data" : @{},
+        @"extraInfo" : @{},
         @"decoration" : @"",
       },
     ]