docs: add ngx-responsive-virtual-scroll (#1374)

Author: jdegand

README.md

@@ -1826,6 +1826,7 @@ to simplify usage and allow quick customization.
 * [ng-mat-select-infinite-scroll](https://github.com/HaidarZ/ng-mat-select-infinite-scroll) - Infinite Scroll directive for Angular Material select component.
 * [horizontal-scroller](https://github.com/miminerd/horizontal-scroller) - Infinite horizontal scroller for Angular apps using Tailwind.
 * [simplebar](https://github.com/Grsmto/simplebar) - Custom scrollbars vanilla JavaScript library with native scroll, done simple, lightweight, easy to use and cross-browser.
+* [ngx-responsive-virtual-scroll](https://github.com/dcbeck/ngx-responsive-virtual-scroll) - A fast and lightweight virtual scrolling solution for Angular that supports single column lists, responsive grid lists, and view caching.
 
 #### State Management