Check i18n access on node type in i18n_access_node_access()

Consider a use case where you want to use the i18n_access functionality for a specific node type, while not touching other multi lingual node types. Currently the i18n_access module does not support this. It's either checking the accessibility for all multi lingual node types or not.

This request is similar to the 'check i18n access by role' but this request is about checking by node type.