Simplyblock Proxmox v0.1.0

The first, experimental release of the Simplyblock Proxmox integration.

To use it, install the .deb package, and add a storage provider:

pvesm add simplyblock <name> \
    --entrypoint=<management_node_ip> \
    --cluster=<cluster_id> \
    --secret=<secret> \
    --pool=<pool>