chore(changelog): add entry related to icon service changes (#14556)

Author: simeonoff

CHANGELOG.md

@@ -10,6 +10,14 @@ All notable changes for each version of this project will be documented in this
     - Added `horizontalSummariesPosition` property to the `pivotUI`, configuring horizontal summaries position.
     - Keyboard navigation now can move in to row headers back and forth from any row dimension headers or column headers.
     - Added keyboard interactions for row dimension collapse using `Alt + Arrows` and row headers sorting using `Ctrl + Arrow Up/Down`.
+- `IgxIcon`, `IgxIconService`
+    - You can now register icons by reference via the `IgxIconService`. To learn more check out the [documentation](https://www.infragistics.com/products/ignite-ui-angular/angular/components/icon-service).
+    - All components now use icons by reference internally so that it's easy to replace them without explicitly providing custom templates.
+    - `registerFamilyAlias` has been deprecated in favor of `setFamily` to allow adding metadata for `type` and `prefix` when registering custom icon families. To migrate from `registerFamilyAlias`, do the following:
+        ```ts
+            this.iconService.registerFamilyAlias('my-family', 'my-family-class');
+            this.iconService.setFamily('my-family', { className: 'my-family-class' });
+        ```
 
 ### General
 - `ColumnType`, `IgxColumn`, `IgxColumnGroup`, `IgxColumnLayout`

projects/igniteui-angular/src/lib/icon/icon.service.ts

@@ -116,7 +116,7 @@ export class IgxIconService {
      * ```typescript
      *   this.iconService.registerFamilyAlias('material', 'material-icons');
      * ```
-     * @deprecated Use `setFamily` instead.
+     * @deprecated in version 18.1.0. Use `setFamily` instead.
      */
     public registerFamilyAlias(
         alias: string,