Add ibus-cangjie to Traditional Chinese packages

[billyswong]

Cross reference #86

ibus-cangjie is a Cangjie / Quick IME created with behaviour better matching the tradition created by MS Windows since 1990s.

To type fast in Quick IME relies a lot on muscle memory. The other Chinese IMEs in IBus don't follow the Windows tradition in Cangjie / Quick.

[clefebvre]

Closing, covered by #86.