Icu 6657 auth method model fragments refactor (#1507)

* refactor: 💡 Remove fragment usage for arrays in auth method
* chore: 🤖 Remove ember-data-model-fragments

✅ Closes: ICU-6657

addons/api/tests/unit/transforms/account-claim-map-array-test.js

@@ -0,0 +1,26 @@
+import { module, test } from 'qunit';
+import { setupTest } from 'ember-qunit';
+
+module('Unit | Transform | account claim map array', function (hooks) {
+  setupTest(hooks);
+
+  test('it deserializes an array of account claims', function (assert) {
+    assert.expect(1);
+    const transform = this.owner.lookup('transform:account-claim-map-array');
+    const deserialized = transform.deserialize(['oid=sub', 'full_name=name']);
+    assert.deepEqual(deserialized, [
+      { from: 'oid', to: 'sub' },
+      { from: 'full_name', to: 'name' },
+    ]);
+  });
+
+  test('it serializes an array of account claims', function (assert) {
+    assert.expect(1);
+    const transform = this.owner.lookup('transform:account-claim-map-array');
+    const serialized = transform.serialize([
+      { from: 'oid', to: 'sub' },
+      { from: 'full_name', to: 'name' },
+    ]);
+    assert.deepEqual(serialized, ['oid=sub', 'full_name=name']);
+  });
+});