Icu 5229 credential model (#1197)

* feat: 🎸 Create Credential Model in API

✅ Closes: ICU-5229

Co-authored-by: Cameron Perera <cameron.perera@hashicorp.com>

addons/api/addon/generated/models/credential.js

@@ -0,0 +1,63 @@
+import BaseModel from '../../models/base';
+import { attr } from '@ember-data/model';
+
+/**
+ * A credential is a data structure containing one or more secrets that binds an
+ * identity to a set of permissions or capabilities on a host for a session.
+ */
+export default class GeneratedCredentialModel extends BaseModel {
+  // =attributes
+
+  @attr('string', {
+    description:
+      'The ID of the Credential Store of which this Credential is a part.',
+  })
+  credential_store_id;
+
+  @attr('string', {
+    description: 'The type of the resource, to help differentiate schemas',
+  })
+  type;
+
+  @attr('string', {
+    description: 'Optional name for identification purposes',
+  })
+  name;
+
+  @attr('string', {
+    description: 'Optional user-set description for identification purposes',
+  })
+  description;
+
+  @attr('date', {
+    description: 'The time this resource was created\nOutput only.',
+    readOnly: true,
+  })
+  created_time;
+
+  @attr('date', {
+    description: 'The time this resource was last updated\nOutput only.',
+    readOnly: true,
+  })
+  updated_time;
+
+  @attr('number', {
+    description: 'Current version number of this resource.',
+  })
+  version;
+
+  // =attributes (username_password)
+  @attr('string', {
+    for: 'username_password',
+    isNestedAttribute: true,
+    description: 'The password hmac for credential.',
+  })
+  password_hmac;
+
+  @attr('string', {
+    for: 'username_password',
+    isNestedAttribute: true,
+    description: 'The username for credential.',
+  })
+  username;
+}

addons/api/addon/models/credential.js

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+import GeneratedCredentialModel from '../generated/models/credential';
+
+export default class CredentialModel extends GeneratedCredentialModel {}

addons/api/app/models/credential.js

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+export { default } from 'api/models/credential';

addons/api/tests/unit/models/credential-test.js

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+import { module, test } from 'qunit';
+import { setupTest } from 'ember-qunit';
+
+module('Unit | Model | credential', function(hooks) {
+  setupTest(hooks);
+
+  // Replace this with your real tests.
+  test('it exists', function(assert) {
+    let store = this.owner.lookup('service:store');
+    let model = store.createRecord('credential', {});
+    assert.ok(model);
+  });
+});