Request for Adding Multi-page Support in Gradio

[YuminosukeSato]

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Is your feature request related to a problem? Please describe.
I often find the need to create interfaces with multiple pages using Gradio. Currently, Gradio supports single-page interfaces, but there are cases where having the ability to switch between different pages within the interface would greatly enhance the user experience.

Describe the solution you'd like
I would like to request the addition of a feature that allows users to create multi-page interfaces using Gradio. This feature would enable us to define multiple pages within a single Gradio application and provide a way to navigate between them. Each page could contain its own set of input and output components, making it easier to organize and present complex interactions to the users.

Additional context
In some applications, it becomes necessary to divide the user interaction flow into different sections or steps. For instance, in a survey application, there might be separate pages for user registration, survey questions, and submission confirmation. The ability to create such multi-page interfaces using Gradio would enhance its versatility and applicability for a wider range of use cases.

[pngwn]

This is a duplicate of #2654. Feel free to take a look at that issue and add any additional information there.