Rewrote SharedProps Type declaration so usePage is not throwing errors

[Barabasbalazs]

🔗 Linked issue

#46

❓ Type of change

• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

By rewriting the config template like this:

declare module '@adonisjs/inertia/types' {
  export type SharedProps = InferSharedProps<typeof inertiaConfig> & {}
}

and by removing this interface declaration from the types:

export interface SharedProps {}

The SharedProps type is easily extended by the user like this:

declare module '@adonisjs/inertia/types' {
  export type SharedProps = InferSharedProps<typeof inertiaConfig> & {
      prop1: number
      prop2: string
  }
}

and the usePage hook from @inertia/react is able to deduce the prop type declared here as well.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[Julien-R44]

The problem is that we need it here too. Otherwise SharedProps won't be available when using InferPageProps