docs: add angular-gantt (#2377)

Author: jdegand

README.md

@@ -1314,6 +1314,7 @@ Current Angular version: [![npm version](https://badge.fury.io/js/%40angular%2Fc
 * [ag-charts](https://github.com/ag-grid/ag-charts/tree/latest/packages/ag-charts-angular) - Fully-featured and highly customizable JavaScript charting library.
 * [amcharts5](https://github.com/amcharts/amcharts5) - Charting library for JavaScript and TypeScript apps. Check out the [Angular integration guide](https://www.amcharts.com/docs/v5/getting-started/integrations/angular/).
 * [angular-chrts](https://github.com/dennisadriaans/angular-chrts) - A high-performance, developer-friendly data visualization library for modern Angular applications.
+* [angular-gantt](https://github.com/ErlonRr/angular-gantt) - Zoneless, signal-based Angular 20+ Gantt chart.
 * [angular-google-charts](https://github.com/FERNman/angular-google-charts) - A wrapper for the Google Charts library written in Angular.
 * [carbon-charts](https://github.com/carbon-design-system/carbon-charts/tree/master/packages/angular) - Carbon Charts Angular is a thin Angular wrapper around the vanilla JavaScript @carbon/charts component library.
 * [Foblex Flow](https://github.com/Foblex/f-flow) - Angular-native library for node editors, workflow builders and interactive diagrams: drag-and-drop nodes and connections, minimap, auto-layout, virtualization, and a keyboard accessibility layer.