Allow property passthrough

[watzon]

Feel free to retitle this if you can think of something more descriptive. Essentially it would be nice to be able to pass through properties from a parent component to a child component without having to individually pass through each one. For instance:

component Bar {
  property baz : String
  
  fun render : Html {
    <div>{ baz }</div>
  }
}

component Foo {
  fun render : Html {
    <Bar {...properties} />
  }
}

Granted this a terrible example and not showing a real world use case, but I think the {...properties} way would be one way to handle it. For a real world use case you can check out my mint-tabler library which includes 3100+ generated components which follow a common template and need to pass properties into a child component.

I would agree that this is normally an anti-pattern and can definitely be relied on the wrong way, but in certain situations (like mine), it could very well make the library considerably smaller.