xbps-bin: make 'list' target without arguments to only show pkgs in "installed" state.
xbps-bin: make 'list' target without arguments to only show pkgs in "installed" state.

ebfe/xbps,ebfe/xbps,datenwolf/xbps,ebfe/xbps,datenwolf/xbps,datenwolf/xbps,stpx/xbps,stpx/xbps,stpx/xbps