feat: create user API

web/src/api/admin/users.ts

@@ -29,3 +29,28 @@ export const adminGetUserApi = async (
 
   return response.data;
 };
+
+export interface CreateUserRequest {
+  email: string;
+  full_name: string;
+  password: string;
+  is_admin: boolean;
+}
+
+export interface CreateUserResponse {
+  id: string;
+}
+
+export const postUser = async (
+  req: CreateUserRequest,
+): Promise<CreateUserResponse> => {
+  const response = await axios.post<CreateUserResponse>(
+    "/api/v1/admin/users",
+    req,
+  );
+
+  if (response.status !== 200 && response.status !== 201)
+    throw await handleApiError(response);
+
+  return response.data;
+};