Swagger Multi-Document Support

[oceanDeep512]

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe it

I checked the configuration provided by @nestjs/swagger and didn't find the ability to configure multi-document or multi-module support, I found a requirement image online

Describe the solution you'd like

Is it possible to add a new configuration item? If there is a similar function.Can you advise how to achieve this effect?

Teachability, documentation, adoption, migration strategy

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What is the motivation / use case for changing the behavior?

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