cmake: fix install target (add bin dir which includes the symlinks and px4-alias.sh)
cmake: fix install target (add bin dir which includes the symlinks and px4-alias.sh)

PX4/Firmware,acfloria/Firmware,PX4/Firmware,acfloria/Firmware,acfloria/Firmware,dagar/Firmware,PX4/Firmware,PX4/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,dagar/Firmware,Aerotenna/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,dagar/Firmware,Aerotenna/Firmware,krbeverx/Firmware,Aerotenna/Firmware,krbeverx/Firmware,krbeverx/Firmware,PX4/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,Aerotenna/Firmware,krbeverx/Firmware,krbeverx/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,dagar/Firmware,acfloria/Firmware,dagar/Firmware,PX4/Firmware,Aerotenna/Firmware,krbeverx/Firmware