[docs] Create demo to showcase the server side Infinite Loading feature

[DanailH]

• I have searched the issues of this repository and believe that this is not a duplicate.

Summary 💡

Create a demo using the already created functionality part of the Infinite Loader feature

Motivation 🔦

To showcase what is possible and how the Infinite Loder feature can use used to create a demo that is meant to reproduce server side loading or lazy loading of data into the DataGridPro. Filtering and sorting should be respected and behave as expected.

[flaviendelangle]

@michelengelen not sure if this issue still make sence

[michelengelen]

@michelengelen not sure if this issue still make sence

I guess not since we have #13878 and this includes adding the documentation. I'll close it. Thanks for pointing it out!