[TIMOB-28317] TiAPI: Add Ti.UI.OptionBar

*Summary:* This is a view which shows a list of options requiring the end-user to make a single selection. *iOS:* On iOS, this will show a segmented control and will work exactly like our existing Ti.UI.TabbedBar view. https://developer.apple.com/design/human-interface-guidelines/ios/controls/segmented-controls/ !OptionBar-iOS.png|thumbnail! *Android:* On Android, this view will show a material toggle button group... https://material.io/components/buttons/android#toggle-button !OptionBar-Android-Horizontal.png|thumbnail! On Android, we the "layout" property can be set to "vertical" to make it look like this... !OptionBar-Android-Vertical.png|thumbnail! *Note:* The behavior of the new Ti.UI.OptionBar should be near identical to Ti.UI.TabbedBar. We're making this a separate view since TabbedBar is intended to be used by apps that want to set up their own custom tab group interface and should use the native tab widgets.