feat(ui5-menu): introduce HorizontalAlign property

[didip1000]

This change introduces a new horizontalAlign property to ui5-menu, similar to what's available in ui5-popover. It allows users to control the menu's horizontal alignment.

The default value is start, but it can also be set to end, center, or stretch.

Usage:

Setting the property to end as follows will align the menu to the end of the opener button:

<ui5-menu horizontal-align="End">
    <ui5-menu-item ...
</ui5-menu>

The menu will look as follows:

Fixes: #10765