Add more vSphere objects

[e1-rahabok]

1 file for each object. Since metric and property are 2 distinct things, they should have their own folders.
VM
ESX
Datastore
Distributed Switch
Distributed PortGroup
Data Center
vCenter Server
vCenter Appliance

[brockpeterson]

Would like to have Orphaned Disks as an Object Type with relationships to Datastores.