chore(changelog): add directionality service

Closes #5903

CHANGELOG.md

@@ -21,6 +21,7 @@ All notable changes for each version of this project will be documented in this
 - `IgxCarousel`:
     - **Breaking Changes** -The carousel slides are no longer array, they are changed to QueryList.
     - **Behavioural change** - When slides are more than 5, a label is shown instead of the indicators. The count limit of visible indicators can be changed with the input `maximumIndicatorsCount`
+- Added `Directionality` service providing information about the text direction of the element's content.
 
 
 ### New Features
@@ -68,8 +69,8 @@ All notable changes for each version of this project will be documented in this
     - `tickLabelsOrientation` input was added. Allows you to change the rotation of all tick labels from horizontal to vertical(toptobottom, bottomtotop).
     - `igxSliderTickLabel` directive has been introduced. Allows you to set a custom template for all tick labels.
     - `isContinuous` - input has been deleted. The option is not supported anymore.
-    - `onValueChanged` - new output has been exposed. This event is emitted at the end of every slide interaction. 
-   
+    - `onValueChanged` - new output has been exposed. This event is emitted at the end of every slide interaction.
+
 - `IgxCarousel`:
     - `keyboardSupport` input is added, which can be used to enable and disable keyboard navigation
     - `gesturesSupport` input is added, which can be used to enable and disable gestures
@@ -80,7 +81,7 @@ All notable changes for each version of this project will be documented in this
     - `nextButtonTemplate` directive is added, which is used to provide a custom next button template. If not provided, a default next button is used.
     - `prevButtonTemplate` directive is added, which is used to provide a custom previous button template. If not provided, a default previous button is used.
 
-- `IgxSelect`: 
+- `IgxSelect`:
     - adding `IgxSelectHeaderDirective` and `IgxSelectFooterDirective`. These can be used to provide a custom header, respectively footer templates for the `igxSelect` drop-down list. If there are no templates marked with these directives - no default templates will be used so the drop-down list will not have header nor footer.
 
 - `IgxDropDown`: