Feature Request / Question: Organize models into subdirectories by tag or prefix or something else(similar to API structure)

[paketeserrano]

Current Behavior
The generator currently organizes API endpoints into subdirectories based on OpenAPI tags:
api/ file_storage/ create_service.py list_services.py firewall_ruleset/ create_ruleset.py kubernetes/ create_cluster.py

However, all models are generated in a flat structure:

models/ __init__.py service.py service_create.py ruleset.py ruleset_create.py cluster.py (209 model files...)

Desired Behavior
I would like models to be organized similarly to API endpoints:
models/ file_storage/ __init__.py service.py service_create.py firewall_ruleset/ __init__.py ruleset.py ruleset_create.py

This would provide better organization for large APIs with many schemas, making it easier to navigate and understand which models belong to which API domains.

Question
Is there currently any way to achieve this through:

• Configuration options?
• Custom templates?
• OpenAPI spec extensions (e.g., x-tag on schemas)?
• Post-generation hooks?

Context
I'm working with an API that has ~210 schemas across 6 different domains. The flat structure makes navigation difficult, especially since many schemas have similar naming patterns. I'm currently using prefixes (e.g., FileStorageService, FirewallRulesetService) to avoid conflicts, but subdirectories would be more intuitive.

Technical Considerations I'm Aware Of

• OpenAPI schemas in components/schemas don't have tag associations (tags are on operations only)
• Would require updating all import statements in generated code (~600+ imports)
• Models can reference other models across different "domains"
• If this isn't currently supported, I'd be interested in contributing if there's interest in this feature. Any guidance on the best approach would be appreciated!

Additional context (optional section):

Generator version: 0.28.1
Python version: 3.12
OpenAPI version: 3.1.0