hypervisor: Add Vcpu trait

This Vcpu trait should be implemented by each underlying hypervisor.

Previously created hypervisor object should create the VM based on
already selected hypervisor and Vm object should create this vcpu
object based on same hyperviosr. Each of this object should be
referenced by trait object i.e <dyn Vcpu>.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Cargo.lock

@@ -457,6 +457,19 @@ dependencies = [
 [[package]]
 name = "hypervisor"
 version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "kvm-bindings",
+ "kvm-ioctls",
+ "libc",
+ "linux-loader",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "thiserror",
+ "vm-memory",
+ "vmm-sys-util",
+]
 
 [[package]]
 name = "idna"