feat(auth): add user and role management

packages/backend/src/graphql/queries/get-user.ts

@@ -0,0 +1,23 @@
+import Context from '../../types/express/context';
+import User from '../../models/user';
+
+type Params = {
+  id: string
+};
+
+const getUser = async (_parent: unknown, params: Params, context: Context) => {
+  context.currentUser.can('read', 'User');
+
+  return await User
+    .query()
+    .leftJoinRelated({
+      role: true
+    })
+    .withGraphFetched({
+      role: true
+    })
+    .findById(params.id)
+    .throwIfNotFound();
+};
+
+export default getUser;