[Bookmark] Add BookmarkProvider

This BookmarkProvider provides the native bookmark operations.

35/36 of the tct tests are passing. We can assume that is 100%, because
the only test not passing is related to tizen.bookmark being read-only.
This object is created by Crosswalk extension system, and fix will be
done there.
Merge pull request #210 from ricardotk/wip

[Bookmark] Add BookmarkProvider