feature: add account set-password ability

addons/api/addon/abilities/account.js

@@ -0,0 +1,15 @@
+import ModelAbility from './model';
+
+/**
+ * Provides abilities for accounts.
+ */
+export default class AccountAbility extends ModelAbility {
+  // =permissions
+
+  /**
+   * @type {boolean}
+   */
+  get canSetPassword() {
+    return this.hasAuthorizedAction('set-password');
+  }
+}