models/crate: Add trustpubOnly attribute

Author: Turbo87

app/models/crate.js

@@ -29,6 +29,12 @@ export default class Crate extends Model {
   @attr documentation;
   @attr repository;
 
+  /**
+   * Whether this crate can only be published via Trusted Publishing.
+   * @type {boolean}
+   */
+  @attr trustpub_only;
+
   /**
    * This isn't an attribute in the crate response.
    * It's actually the `meta` attribute that belongs to `versions`