Keyboard module

[pablomayobre]

Here we also have some issues, the first one is get/setKeyRepeat, now get is has but also the argument passed and returned to/from the function changed from delay, interval to just enabled.

love.keypressed doesnt support the unicode value anymore, but instead they added love.textinput, maybe we could change do something like love.keypressed("",string.byte(t)) inside textinput or something like that, need to think more about this.