Standardize Error objects for Promises

Summary:
public

Promises are coming.  And as part of it, we are standardizing the error objects that will be returned.  This puts the code in place on the Android side to always send the proper error format.

It will be an error object like this
`{
  code : "E_SOME_ERROR_CODE_DEFINED_BY_MODULE", // Meant to be machine parseable
  message : "Human readable message",
  nativeError : {} // Some representation of the underlying error (Exception or NSError) , still figuring out exactly, but hopefully something with stack info
}`

Reviewed By: davidaurelio

Differential Revision: D2839927

fb-gh-sync-id: 08f1ce79af24d70357b9957f14471a12627dcffa

ReactAndroid/src/main/java/com/facebook/react/bridge/Promise.java

@@ -19,5 +19,8 @@ package com.facebook.react.bridge;
 public interface Promise {
   void resolve(Object value);
   void reject(Throwable reason);
+  @Deprecated
   void reject(String reason);
+  void reject(String code, Throwable extra);
+  void reject(String code, String reason, Throwable extra);
 }