[Grid] resizable class

[svetq]

Is your feature request related to a problem? Please describe.
No

Describe the solution you would like to see implemented

To make the Grid resizable we would need the following class:

.k-grid-resizable {
resize: both;
overflow: auto;
}

This issue is an enabler for the resizable Grid feature:
https://github.com/telerik/kendo-angular-private/issues/3343

Describe the alternatives you have considered
As an alternative, we can apply the styles inline.

Additional context
research on the Grid Resizable functionality:
https://github.com/telerik/kendo-angular-private/issues/3297