Add support for `chrome_menu_actions` ux page property

[jesalynrose]

Currently, this page generates JSON for the chrome_menu UX page property. Extend this page to generate JSON for the chrome_menu_actions UX Page Property as well.

I'm not sure what this will entail, but you must make sure you do not impede current functionality. At a minimum, what I think needs to be implemented:

• Add a Toggle/Switch to select which type of menu you are generating in the Start Container
• Saved Menu Container should show both types of menus
• MenuBuilderUtils Client Script Include needs to be updated to generate the JSON for this property. Will probably also need to add new client state parameters to the page?
• Menu Builder GraphQL API and Get Menus / Save Menu Data Brokers are used to get and save existing chrome_menu menus. This functionality needs to be duplicated for chrome_menu_actions menus.
• The issue on the sister repository will add new functionality to the component, like dispatching a new event. The page needs to be updated to respond to the new event and any other changes from the component to support this new feature.