Add an option to create a linked clone of LXC Containers

[jebarpg]

Describe the bug
A clear and concise description of what the bug is.

I have tried to create a clone of an 'LXC template' but it does not create a link clone. It does a full clone.
How do I create a link clone.

Please see this issue
muhlba91/pulumi-proxmoxve#351

To Reproduce
Steps to reproduce the behavior:

1. Create a resource '....'
2. Run '....'
3. See error
4. Modify the resource '....'
5. Run '....'
6. See error

Please also provide a minimal Terraform configuration that reproduces the issue.

# >>> put your example here <<< #

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.

• Single or clustered Proxmox:
• Proxmox version:
• Provider version (ideally it should be the latest version):
• Terraform/OpenTofu version:
• OS (where you run Terraform/OpenTofu from):
• Debug logs (TF_LOG=DEBUG terraform apply):

[bpg]

That will be a new feature for the provider.

[bpg-autobot]

Marking this issue as stale due to inactivity in the past 180 days. This helps us focus on the active issues. If this issue is reproducible with the latest version of the provider, please comment. If this issue receives no comments in the next 30 days it will automatically be closed. If this issue was automatically closed and you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thank you!