Add initial implementation of Simple Gantt chart and sample names list

- Created index.html for the Gantt chart with sample tasks and configurations.
- Added styles for the Gantt chart and linked necessary CSS and JS files.
- Introduced a names.txt file containing a list of names for potential use in the application.

layout/style.scss

@@ -1460,4 +1460,11 @@ body>.top {
       }
     }
   }
+}
+
+.bootstrap-datetimepicker-widget .picker-switch {
+  a {
+    display: block;
+    color: #000;
+  }
 }