Add requiresMainQueueSetup method

Since RN 0.49, `requiresMainQueueSetup` needs to be defined if the module overrides `constantsToExport`.

Author: habovh

ios/RNInstabug/InstabugReactBridge.m

@@ -439,6 +439,11 @@ - (NSDictionary *)constantsToExport
               };
 };
 
++ (BOOL)requiresMainQueueSetup
+{
+    return YES;
+}
+
 + (BOOL)iOSVersionIsLessThan:(NSString *)iOSVersion {
     return [iOSVersion compare:[UIDevice currentDevice].systemVersion options:NSNumericSearch] == NSOrderedDescending;
 };