As a User I can declare Actions in the template (List, Create, Edit, View) as children of a Resource component

[sgobotta]

The current situation is:

• Resource accepts a list of objects that declare different attributes of a resource (entity in a db)
• Resource accepts a custom Vue component and gets a few vue-admin functions injected to perform requests to an API

Our goal:

• A user should be able to declare a Resource by using a Vue component
• Resource will be wrapped by a functional component that must provide valid data (props) to the Resource component.
• VueAdmin must also expose a new functional component for every action (List, Create, Show, Edit)
• In a first instance this component will work as a wrapper of the original Action component (List, Create, Show, Edit). VueAdmin must manipulate and reorder props as necessary to bring valid data to the Action component.
• A user should declare UI components such as TextField, TextInput, etc as children of one of the Action components. This component can be exposed or can be native html elements such as p, div, input, etc (To review)