View Partial Event Emitters

[hdavidzhu]

It would be really convenient if view partials also support event emitters:

<!--
@param {Function} onClick - Custom on-click handler
-->
<some-view:>
  <div>
    <button on-click="@onClick()">Click</button>
  </div>

<usage:>
  <view is="some-view" on-click="onSomeViewClick()"/>

Currently, we need the extra overhead of creating a component for this to be possible.