Add JavaScript bindings for Errata API (#1260)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1260

Wire C ABI to embind to expose to JS

Reviewed By: yungsters

Differential Revision: D45297215

fbshipit-source-id: a13d60bc0ad82d7697564136f4d944e8f70db8ec

javascript/src_native/Config.hh

@@ -33,12 +33,14 @@ public: // Setters
   void setExperimentalFeatureEnabled(int feature, bool enabled);
   void setPointScaleFactor(float pixelsInPoint);
   void setUseLegacyStretchBehaviour(bool useLegacyStretchBehaviour);
+  void setErrata(int errata);
   void setUseWebDefaults(bool useWebDefaults);
 
 public: // Getters
   bool isExperimentalFeatureEnabled(int feature) const;
-  bool useLegacyStretchBehaviour();
-  bool useWebDefaults();
+  bool useLegacyStretchBehaviour() const;
+  int getErrata() const;
+  bool useWebDefaults() const;
 
 private:
   YGConfigRef m_config;