Cluster name tag for VMs, and ability to add custom tags

[mcbenjemaa]

Describe the solution you'd like
[A clear and concise description of what you want to happen.]

Currently, we add ip tag, it will be great to add cluster name as a tag to the machines,
and allow adding more tags

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Cluster-api-provider-proxmox version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):

[mcbenjemaa]

duplicated #72