[OCTANE] Craft Glimmer Component RFC

[MelSumner]

This RFC should include:

• Defining the base class
• Where it will be imported from
• How will Ember/Glimmer interop work

This issue is part of the Octane Edition of Ember.js.

[bartocc]

isn't this done by #416 ?

[rwjblue]

Yep, thank you @bartocc!