add server to monorepo.

packages/server/src/models/ModelSearchable.ts

@@ -0,0 +1,18 @@
+import { IModelMeta, ISearchRole } from '@/interfaces';
+
+export default (Model) =>
+  class ModelSearchable extends Model {
+    /**
+     * Searchable model.
+     */
+    static get searchable(): IModelMeta {
+      throw true;
+    }
+
+    /**
+     * Search roles.
+     */
+    static get searchRoles(): ISearchRole[] {
+      return [];
+    }
+  };