chore!: replace error response schemas

- add new object schema `AppError`
- add new response schema `Error`, referencing `AppError` as response body
- replace response schemas with `Error`
  - `GET /access 403`
  - `GET /access/{resource} 403`
  - `GET /data/people 403`
  - `PUT /data/products 400,403,404`
  - `POST /data/products 400,403`
  - `PATCH /data/products 400,403,404`
  - `DELETE /data/products 403,404`
  - `GET /data/orders 403`
  - `PUT /data/orders 400,403,404`
  - `PUT /data/orders 400,403,404`
  - `POST /data/orders 400,403`
  - `PATCH /data/orders 400,403,404`
  - `DELETE /data/orders 403,404`
  - `POST /data/orders/confirmation 403`
  - `POST /data/orders/rejection 403`
  - `POST /data/orders/completion 403`
  - `GET /data/users 403`
  - `PUT /data/users 400,403,404`
  - `POST /data/users 400,403`
  - `PATCH /data/users 400,403,404`
  - `DELETE /data/users 403,404`
  - `GET /data/images 403`
  - `PUT /data/images 400,403,404`
  - `POST /data/images 400,403`
  - `PATCH /data/images 400,403,404`
  - `DELETE /data/images 403,404`
  - `GET /data/user_roles 403`
  - `POST /public/checkout 400,403`
  - `POST /public/checkout/validate 400,404`
  - `POST /public/receipt/{code} 404`
  - `GET /data/product_categories 403`
  - `PUT /data/product_categories 400,403,404`
  - `POST /data/product_categories 400,403`
  - `PATCH /data/product_categories 400,403,404`
  - `DELETE /data/product_categories 403,404`
  - `GET /account/profile 403`
  - `PUT /account/resource 400,403`
  - `POST /public/register 400`
  - `PUT /data/shippers 400,403,404`
  - `POST /data/shippers 400,403`
  - `PATCH /data/shippers 400,403,404`
  - `DELETE /data/shippers 403,404`
  - `PUT /data/product_lists 400,403,404`
  - `POST /data/product_lists 400,403`
  - `PATCH /data/product_lists 400,403,404`
  - `DELETE /data/product_lists 403,404`
  - `PUT /data/product_list_contents 400,403,404`
  - `POST /data/product_list_contents 400,403`
  - `DELETE /data/product_list_contents 403,404`
- remove now-unused response schemas
  - `Forbidden`
  - `NotFound`
  - `BadRequestBody`
- increment patch version
  this is yet another breaking change, but no new release is out yet