Add 3 new input methods "Central Kurdish" transliteration (ckb.wiki)

The "Central Kurdish" or Soranî uses a variant of the Arabic alphabet.
It is spoken in Iraq and Iran, therefore it uses two different keyboards
+ the QWERTY keyboard.
(see, http://en.wikipedia.org/wiki/Soranî dialectt).

Requested by "Çalak" an administrator of ckb.wikipedia
(see discussion, http://ku.wikipedia.org/wiki/Gotûbêja
bikarhêner:Ghybu#ckb-kbd)