New Component: Scroller

[mertsincan]

Scroller is a performant approach to handle huge data efficiently.

It is designed as an API in general terms and is used instead of cdk-virtual-scroll in all our components. As it is known, Angular cdk-virtual-scroll was limiting our components at many points. The most basic example of this is when it was desired to use virtualscroll in DataTable, it was impossible to use it with any sticky element due to the nature of cdk-virtual-scroll. So we needed this kind of component/API to solve such problems and take our virtual scroller structure one step further.