add bengali language bn.data for gtkemojichooser
Now gtkemojichooser will work for searching with bengali language
PR of bn data is accepted by emojibase: https://github.com/milesj/emojibase/pull/161
Now gtkemojichooser will work for searching with bengali language
PR of bn data is accepted by emojibase: https://github.com/milesj/emojibase/pull/161