Meta: Run QEMU with QMP socket

This allows external connections to the QEMU monitor via QMP.

Meta/run.sh

@@ -213,6 +213,7 @@ if [ -z "$SERENITY_MACHINE" ]; then
         -device i82801b11-bridge,id=bridge3 -device sdhci-pci,bus=bridge3
         -device ich9-ahci,bus=bridge3
         -chardev stdio,id=stdout,mux=on
+        -qmp unix:qmp-sock,server,nowait
         "
     fi
 fi