Constants (as generated by ApplicationModule::constant()) were causing a
logic_error if accessors of different types were using the same constant
(created with the same value and the same value type upon creation).
This is possible since the type passed to constant() does not have to be
the same as the type of the accessor.

This is now fixed by giving each constant a fully unique name, so every
accessor using a constant will be in its own little variable network.

* use imported targets where possible

also for the export

* cmake: remove explicit definitions for downstream projects

* increase minor version

will be done for all projects using cmake-exports

* remove --export-dynamic linker flag

because it makes no sense for libs

This is the implementation for the specification change done in a recent
commit.

Jens Georg authored 2 years ago and Martin Christoph Hierholzer committed 2 years ago

Move the config module to the proper level for matching up with the
device