Support for editing all QEMU arguments. (Alternatively, support appending "model=" and "serial=" to "-device" arguments)

i tried to run a hostile program on a windows vm that tries to detect VMs and ive been able to do it so far with just -smbios arguments.

I noticed that i couldnt edit existing arguments and having that option could be very useful for me and others who attempt similar things. I recognize that this would make messing up very easy so maybe it could be hidden under option/alt key hold or similar method.