Implement --thick-copy for vm deploy and jail deploy

[yaroslav-gwit]

As of now, during the deployment process we use zfs clone to make a new VM, or a Jail. This means that the deployment process will be almost instant, but sometimes it's not ideal in terms of disk space usage. I won't go into much detail here, but essentially the more you deviate from the base image - the more space your clone takes.

This is fine on most systems, but can be problematic on the systems with fast NVME drives, but with much less space overall. The underlying process will rely on ZFS replication executed locally from the template dataset to the target dataset.