Add comprehensive terraform import documentation for Incus resources.
Includes syntax for importing containers with for_each keys, retrieving
image fingerprints, and specific import commands for Uranian hosts.
Covers troubleshooting for common import issues and state verification.
Removes obsolete korax.helu.ca host from ansible inventory.
Replaces the minimal project description with a comprehensive README
including a component overview table, quick start instructions, common
Ansible operations, and links to detailed documentation. Aligns with
Red Panda Approval™ standards.
