Implement menus and context menus

[bdlukaa]

Menus and context menus display a list of commands or options when the user requests them. Use a menu flyout to show a single, inline menu. Use a menu bar to show a set of menus in a horizontal row, typically at the top of an app window. Each menu can have menu items and sub-menus.

Anatomy:

• MenuBar - MenuBarItem (Essentially a button) - MenuFlyoutItem (Essentially a tappable list tile)

The animation is a SizeTransition combined with ease curve and faster duration.

[WinXaito]

For context menu:

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