fix(Tizen): Allow detect screen resolution using ProductInfo API (#97)

See:
https://developer.samsung.com/smarttv/develop/api-references/samsung-product-api-references/productinfo-api.html

Author: avelad

backends/tizen/app-template/config.xml

@@ -13,6 +13,9 @@
     <!-- Access to the internet -->
     <tizen:privilege name="http://tizen.org/privilege/internet"/>
 
+    <!-- Access to the productinfo, eg: screen resolution -->
+    <tizen:privilege name="http://developer.samsung.com/privilege/productinfo"/>
+
     <!-- Settings for the test launcher.
          The "encryption" setting is for the encryption of application resources
          such as our index.html file.  This is not related to EME. -->