Converted to v2 addon format

[ijlee2]

What changed?

• Introduced workspaces (ember-render-helpers and test-app)
• Converted ember-render-helpers to v2 addon
• Updated CI

[ijlee2]

To be safe, I replaced ember-source with @types/ember__* so that the declaration files don't include the line /// <reference ... />. At the time of writing, we may encounter an issue in the consuming project when this line is present.

- /// <reference types="ember-source/types/stable/@ember/component/helper" />
import Helper from '@ember/component/helper';
import type { CallbackFunction, NamedParameters, PositionalParameters } from '../types.ts';
interface DidInsertHelperSignature {
    Args: {
        Named: NamedParameters;
        Positional: [CallbackFunction, ...PositionalParameters];
    };
    Return: void;
}
/**
 * This helper is activated only when it is rendered for the first time
 * (inserted in the DOM). It does not run during or after it is un-rendered
 * (removed from the DOM), or when its arguments are updated.
 */
export default class DidInsertHelperHelper extends Helper<DidInsertHelperSignature> {
    didRun: boolean;
    compute(positional: DidInsertHelperSignature['Args']['Positional'], named: DidInsertHelperSignature['Args']['Named']): void;
}
export {};
//# sourceMappingURL=did-insert-helper.d.ts.map

[ijlee2]

In v2 addons, we have to use relative paths (self-reference is not allowed) and specify file extensions when a relative path is used.