Final Report doesn't distinguish system settings
Added ability to have 'sections' to group stuff
Added value function to display options as ON / OFF / value / -undefined-
Added sections System, Config, Libraries
Added a bunch of data to System and Config. Moved some out of Libraries as appropriate.
Removes the BUILD_QT5 flag and adds a new FREECAD_QT_VERSION option,
which can be set to either "Auto" (default), 5, or 6. Auto detects which
version of Qt is installed on the system and chooses it. If both version
are installed, Qt5 is used.
Note that this DOES NOT implement compiling against Qt6, it only adds
the necessary cMake infrastructure to begin work on the source code
changes that will be required.
