Debian GNU/Linux 12 templates

• Debian GNU/Linux cloud-init v2 templates added
• Use sudo group is the Debian 12 template
  • use the sudo group in the Debian 12 templates; this is more inline how
    Debian systems are configured.
• docs/examples added
• Documentation updated

BUGFIX: remove dependencies from meta-data

* removed dependencies from meta-data; executing the roles
  causes incorrect behaviour

Dependencies added

• Dependencies added to the metadata
• Documentation updated

virt_install_vm_installed return variable

* virt_install_vm_installed retrun variable added.
  set to true when the virtual machine is installed by the role.

Powerroff and post installation commands

• Added support for poweroff
• Added support for post installation commands
• README.md updated

First "stable" release

First "stable" release