Feat: Complete and Integrate the 'Register Your Hotel' Feature

@Soumashree-Das is already working on this.

Since Jul 30, 2025.

Hey @manishkumar8312

### Description
The codebase contains an incomplete component, ``, which is currently unused and set to `{false && }` in `App.jsx`. This component provides the UI for a hotel owner to register a new hotel but lacks the necessary backend logic and integration.

This feature is a core part of the "Admin Functionality" mentioned in the `README` ("Add new hotel listings").

### Proposed Plan to Complete the Feature

1. **Create a Backend Endpoint:**
- Design a `Hotel` model in Mongoose.
- Create a new API endpoint on the server, e.g., `POST /api/hotels`.
- This endpoint must be a **protected route** that only users with the `'hotelOwner'` role can access. It will receive hotel data from the form and save it to the database.

2. **Activate the Frontend Component:**
- Wire up the `` form's `onSubmit` handler to make an authenticated `axios` POST request to the new `/api/hotels` endpoint.
- Implement state management for loading and error states during form submission.
- Provide user feedback upon success (e.g., "Hotel registered successfully!") or failure using a toast notification system.

3. **Integrate into the UI:**
- Add a "Register Hotel" button to the Owner Dashboard (`/owner`) that opens the `` component as a modal.

Completing this feature is a major step towards fulfilling the project's core promise for hotel owners. I am prepared to work on both the frontend and backend parts of this task.