[6.0][mediacontroller] add MediaControllerPlaylistsInfo interface

[6.0][mediacontroller] add MediaControllerPlaylistsInfo interface

[acr]
http://suprem.sec.samsung.net/jira/browse/TWDAPI-248

[description]
>> refactor_05 <<
add MediaControllerPlaylistsInfo interface to MediaControllerServerInfo.
Methods added to MediaControllerPlaylistsInfo interface:
+ getAllPlaylists
+ sendPlaybackItem
+ addPlaylistUpdatedListener
+ removePlaylistUpdatedListener

[verification]
tested manually in chrome console
tct-mediacontroller-tizen-tests fails with 2 TC:
- MediaControllerServer_iconURI_attribute.html <- has to be modified,
  because attribute iconURI is no longer readonly
- MediaControllerServerInfo_iconURI_attribute.html <- has to be modified,
  because attribute iconURI is no longer readonly

Change-Id: I761bd30eb7988a0d874f1569cdf2e7f147012ee8
Signed-off-by: Dawid Juszczak <d.juszczak@samsung.com>