feat: add method to get subgroups

src/types.ts

@@ -239,3 +239,23 @@ export interface ThingWithTimeStats {
     total_time_spent: number;
   };
 }
+
+/**
+ * A GitLab group
+ */
+export interface Group {
+  id: number;
+  web_url: string;
+  name: string;
+  path: string;
+  description: string;
+  visibility: string;
+  lfs_enabled: boolean;
+  avatar_url: string;
+  request_access_enabled: boolean;
+  full_name: string;
+  full_path: string;
+  parent_id: number;
+  ldap_cn: string;
+  ldap_access: string;
+}