Create database and store users/data

[mfiloramo]

Backend Database:
A more robust solution is to store chat history on a backend database. This ensures that the conversations are accessible across devices and are not lost when users clear their browsing data. Common databases used for chat applications include Firebase, MongoDB, PostgreSQL, and MySQL.

When using a backend database, you'll need to implement a server-side API that your Angular application can communicate with to store and retrieve chat data. If you use Firebase, which has a real-time database, you can take advantage of AngularFire – the official Angular library for Firebase.