Msys2 Makefile.meson: Ruledit build cleaning client build directory
Attached patch does expose other bugs, but I consider it still a big step to right direction. Namely the exposed problem is that the directory for Qt5 version of the ruledit is not cleaned. Previously it got wiped as an erroneous side-effect of cleaning Qt5-client.
Msys2 Makefile.meson ruledit build erroneously clears (before installing the new build) install directory of the client by the same gui (qt5/qt6)