GraphQL: Renaming Types/Inputs (#5883)

* Renaming GraphQL Types/Inputs

* Add Native Type to avoid collision

* Use pluralize for renaming

* Fixing tests

* Improve name collision management - tests passsing

* Renaming few more default types

* Rename file input

* Reverting fields types to not collide with the relay spec types
Improver users mutations

* Adding ArrayResult to the reserved list

* Fixing tests

* Add more unit tests to ParseGraphQLSchema

* Test transformClassNameToGraphQL

* Name collision tests

src/GraphQL/transformers/className.js

@@ -0,0 +1,8 @@
+const transformClassNameToGraphQL = className => {
+  if (className[0] === '_') {
+    className = className.slice(1);
+  }
+  return className[0].toUpperCase() + className.slice(1);
+};
+
+export { transformClassNameToGraphQL };