Introduce useHelper, update automation blueprint

[NullVoxPopuli]

• useHelper - invoke legacy ember helpers (non-functions) in js

• shared - sharing a single invocation / value between components

  NOTE: this utility has moved to its own addon and will not be a part of ember-resources, as it made more sense to implement it as a decorator. Here is the repo: https://github.com/NullVoxPopuli/ember-shared-memory

  proposed api

  import Component from '@glimmer/component';
  import { useTask, shared } from 'ember-resources';
  
  export default class MyComponent extends Component {
     // reactive & derived ember-concurrency task
     // this could also just be _any_ resource
    compute = useTask(this, ...);
  
    // as long as only `data` is accessed (instead of `compute`), the value of `compute` will be shared among
    // all instances of MyComponent.
    //
    // this is still the same as instead defining this on a service and accessing that service from the component,
    // except: you don't need to define a service.
    // 
    data = shared(this, () => this.compute); 
  } 

  how does shared know what to key off of?

  • the class via this.constructor
  • the resource/task/function via prototype or some related means (tbd)

  this has the advantage over MemoizedTask in https://github.com/CrowdStrike/ember-resource-tasks in that we don't need to specify a key, and the api is much simplified.

[github-actions]

🎉 This PR is included in version 3.2.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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