Inheritable Component layout?

components.child-a.js

import Parent from './my-component';

export default Parent.extend({
});

components.my-component.js

import Ember from 'ember';
import layout from '../templates/component-frame';

export default Ember.Component.extend({
  layout,
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{my-component}}
{{child-a}}
<br>
<br>

templates.component-frame.hbs

<h1>It's the crispy outer shell</h1>
<div style='border: 1px solid tomato; padding: 1rem'>
{{yield}}
</div>

templates.components.child-a.hbs

Child A

templates.components.my-component.hbs

Main component content

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}