[Qt-creator] Please ship the accessibility plugins with QtCreator

[Leo Spalteholz]

Currently the plugins are not included with QtCreator, which means its
menus are not accessible to a screen reader.
I spoke to a qt support engineer and they said QtCreator wouldn't
support accessibility unless there was demand for it, but this is
something that could easily be added to give basic access.

I just copied the plugins to the QtCreator install dir and got pretty
good results.

Leo