Add docs for running minos on qemu-system-aarch64

Use python3 as the default python interpreter

Minos V0.4 release

update the README files for new code base

update foundation-v8 dts setting

return -EACCES when there is no device for MMIO

print the state string of the task when ps

shutdown and dump the vcpu state when fault

add driver code to Linux to support Minos

use SVC to implement the sched() function

fix the issue that kick_vcpu do not send IPI issue

send virq from last failed virq index

set the task's state to TASK_STATE_READY when restart

display the task's state when do cmd ps

refactore the timer API and change the API interface