Qt-DAB versions 4 and 5

An old plan was to upgrade the dabMini program, just an interface as simple as possible, just for listening to a service
Implementation of that plan ended up in a new GUI for Qt-DAB, and a version next tot 4.4

While called V5, it is functionally the same as the 4.4 version, just with a new front. Basically almost all controls are shifted to the
configuration window (which is called configuration and control window), and just a few buttons for interacting are left on the
main widget.
So, V5 is not a replacemement, and updates to the 4 version will - at least for now - be numbered 4.x.x

To be complete, I generated AppImages and Windows installers for both the 4 and 5 version.

Note that the qt-dab-5 version now has support for generating eti files. If there is (lots of)m interest, I'' add the same
functionality to the 4.4. version

I run under Windows the 4 and 5 versions next to each other, they have different identifications.
Note that the appImages and Windows installers are made from the most recent sources, not the sources in this
release version

The most recent versions are "coloured:, thanks to a Qt-stylesheet

The build from 27/10 has - apart from an additional checkbox for saving/not saving slides - support for the SDRplay v3 that is
(almost completely) rewritten and provides now also the C antenna for the RSPDx