Feature: Update the develop branch for deployment on heroku.

### Is your feature request related to a problem? Please describe.
The final phase of any project is the successful deployment so that users can interact with it in production.
This website backend is currently under development but it will be beneficial for newcomers or any contributors to see the website in the production and know about this project in detail.

### Describe the solution you'd like
1. Use the develop branch as a deployment branch.
2. Do the required changes to deploy the site on Heroku.
3. You can see this for reference: [heroku docs](https://devcenter.heroku.com/articles/deploying-python) or [this](https://www.analyticsvidhya.com/blog/2020/10/step-by-step-guide-for-deploying-a-django-application-using-heroku-for-free/)
4. The deployment must be integrated with GitHub.
**NOTE**: Allow the `open-source-programs-web` deployed URL to make API requests by adding the deployed URL to allowed hosts.

### Additional context
Feel free to research more about this and add more features to make the deployment process easy.

### Estimation
2 hours