feat(redoc): add @hono/redoc middleware

[jonghyo]

Add @hono/redoc Middleware

This pull request introduces the @hono/redoc middleware for Hono applications. With this addition:

You can integrate ReDoc into your Hono application to provide an interactive API documentation interface.
The middleware allows you to serve ReDoc on a specified route and read an OpenAPI Specification to render the documentation.
This enhances the API documentation experience by making it more accessible and easier to interact with.

baseApp
  .doc31('/doc', {
    openapi: '3.1.0',
    info: {
      title: 'API',
      version: '1.0.0',
    },
  })
  .get(
    '/ui',
    redoc({
      url: '/doc',
    }),
  )

You can added the ability to configure options for ReDoc.

baseApp
  .doc31('/doc', {
    openapi: '3.1.0',
    info: {
      title: 'API',
      version: '1.0.0',
    },
  })
  .get(
    '/ui',
    redoc({
      url: '/doc',
      theme: {
        colors: {
          primary: {
            main: '#FF0000',
          },
        },
        sidebar: {
          backgroundColor: '#FF0000',
        },
      },
    }),
  )

[changeset-bot]

🦋 Changeset detected

Latest commit: d570523

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hono/redoc	Major

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