Progress in the view

Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca>
Added new entry type for the preempt view

VmPreemptEntry

Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca>
Added host threads in the view

Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca>
Fixed a bug in the vm view

The view did not show a task migration until the next time the task got
scheduled in.

Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca>
View is almost complete

Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca>