Add device model, supernet prefixes, and ASN number pool for IPAM
foundation
Add IP prefix and address schemas with resource manager support
Add device model schema with port specifications
Add site IP prefix relationships and fabric device model relationships
Refactor the .infrahub.yml configuration file to prefix all schema, menu, and object paths with the 'infrahub/' directory. This change aligns the configuration with the reorganized project structure where Infrahub resources have been moved into a dedicated subfolder.