2 new plugins

First time doing PowerShell/PowerCLI, so there is properly room for
improvement.

106 Find Phantom Snapshots:
This plugin will find VM's running of Delta VMDK file, but without
vCenter/ESXi being aware of this.
So no snapshots reported in Snapshot Manager.

107 Quantity of snapshots:
This plugin will find VM's with more than X snapshots.