PWA-805: Expose localization system / store config from GraphQL

Author: eug123

app/code/Magento/StoreGraphQl/etc/schema.graphqls

@@ -3,7 +3,7 @@
 type Query {
     storeConfig : StoreConfig @resolver(class: "Magento\\StoreGraphQl\\Model\\Resolver\\StoreConfigResolver") @doc(description: "The store config query") @cache(cacheable: false)
     availableStores(
-        useCurrentGroup: Boolean @doc(description: "Get only store views from the current store group")
+        useCurrentGroup: Boolean @doc(description: "Filter store views by current store group")
     ): [StoreConfig] @resolver(class: "Magento\\StoreGraphQl\\Model\\Resolver\\AvailableStoresResolver") @doc(description: "Get a list of available store views and their config information.")
 }
 
@@ -34,5 +34,5 @@ type StoreConfig @doc(description: "The type contains information about a store
     secure_base_static_url : String @doc(description: "Secure base static URL for the store")
     secure_base_media_url : String @doc(description: "Secure base media URL for the store")
     store_name : String @doc(description: "Name of the store")
-    use_store_in_url: Boolean @doc(description: "Indicates whether store code is used in url")
+    use_store_in_url: Boolean @doc(description: "The configuration determines if the store code should be used in the URL")
 }