🔨 Create a quickflux_INSTALL option default to on (to keep previous behavior by default).
🔨 Create a quickflux_INSTALL option default to on (to keep previous behavior by default).

This allow to disable the installation of quickflux, if using quickflux in a superbuild and linking PRIVATE to quickflux. In that case quickflux doesn't need to be installed along the superbuild target, since it will be compiled into the library binary.

benlau/quickflux,benlau/quickflux