Support building from SDK's Qt Creator (shadow builds)

[Tomin1]

Support building from SDK's Qt Creator. Currently it is not possible because Patience Deck's build system doesn't support shadow builds. I think it should be possible to improve builds so that regular (non-harbour) version would support shadow builds. It wouldn't be quite out of the box builds as Guile and other libraries need to be built and installed first but it could make development more attractive for some developers. Harbour builds require complicated steps that might be a little too much to get working with shadow builds and rebuilding libraries takes a long time anyway, but even regular builds as shadow builds would be a good first step.

[Tomin1]

As a side note, I would really like to see SDK supporting shadow builds with meson. I like that more than qmake.

[llewelld]

This would, in my opinion, be a really nice improvement. It would make it much easier for others to contribute.