EZP-20930: Added missing ressources links

- /api/ezp/v2/:

  - /Root/contentByRemoteId
  - /Root/contentTypeByIdentifier
  - /Root/contentTypeGroups
  - /Root/rootUserGroup
  - /Root/locationByRemoteId,
  - /Root/locationByPath
  - /Root/objectStateGroups
  - /Root/objectStates
  - /Root/globalUrlAliases
  - /Root/createSession

- /api/ezp/v2/content/objectstategroups/{objectStateGroupId}:

  - /ObjectStateGroup/ObjectStates

- /api/ezp/v2/content/objects/{contentId}

  - /Content/ObjectStates

- /api/ezp/v2/content/types/{contentTypeId}

  - /ContentType/Groups
  - /ContentType/Draft

- /api/ezp/v2/content/locations/{locationPath}

  - /Location/UrlAliases

- /api/ezp/v2/user/users/{userId}

  - /User/Groups