lb4 relation doesn't find models

Describe the bug

I have a project with a lot of models. I organized the models in "sub directories" inside "models" directory.
The "export" is working properly and all the project is working.
What is not working is the possibility to add repositories, relations or anything else
"lb4 relation" stops with an error "Generation is aborted: Error: No models found in ".../src/models"."
I expect the script to be capable to look for models also inside according to what is available in "index.ts" from "models" directory.

Logs

No response

Additional information

No response

Reproduction

https://github.com/danysz/demo-lb4-cli-model-not-found

lb4 relation コマンドと issue にリンクされている再現プロジェクトから始め、その後、src/models をどのようにスキャンし、そのディレクトリの index.ts をどのように使用しているかを調べます。サブディレクトリに整理されたモデルが、関係またはリポジトリの生成時に検出され、「No models found.」が出力されなくなれば作業完了です。