sortfilterproxymodel: initial add 0.1.1+
sortfilterproxymodel: initial add 0.1.1+

As long as there is no response uptream on [1] use our source to build shared
library.

Signed-off-by: Andreas Müller <d72a15aaaca3a7afa855175c72dc8d2e05931e32@gmail.com>

schnitzeltony/meta-qt5-extra,schnitzeltony/meta-qt5-extra,schnitzeltony/meta-qt5-extra