fix: swagger组件中，ApiResponse 的 schema 参数的处理

[7kyun]

Checklist

• npm test passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

Affected core subsystem(s)

• @midway/swagger

Description of change

swagger组件中对直接配置了scheme 的写法做了一些兼容

起因是打算封装一个固定响应格式的装饰器，发现以下写法，直接使用schema不生效

import { ApiExtraModel, ApiOkResponse, getSchemaPath, ReferenceObject, SchemaObject, Type } from '@midwayjs/swagger';
import { ResponseVO } from '@/model/view/Basic';

export interface IResponseOptions<T extends Type<any>> {
  type: T;
  description?: string;
  isArray?: boolean;
  isPaginated?: boolean;
}

const baseTypeNames = ['String', 'Number', 'Boolean'];

export const ApiBasicResponse = <T extends Type<any>>(options: IResponseOptions<T>): MethodDecorator => {
  const { type } = options;
  const typeName = type?.name || 'null';
  let responseData: SchemaObject | ReferenceObject;
  if (options.isArray) {
    responseData = { type: 'array', items: { $ref: getSchemaPath(type) } };
  } else if (options.isPaginated) {
    responseData = {
      type: 'object',
      properties: {
        items: { type: 'array', items: { $ref: getSchemaPath(type) } },
        total: { type: 'number' },
        success: { type: 'boolean' },
      },
    };
  } else if (type) {
    if (baseTypeNames.includes(typeName)) {
      responseData = { type: typeName.toLocaleLowerCase() };
    } else {
      responseData = { $ref: getSchemaPath(type) };
    }
  } else {
    responseData = {
      type: 'null',
      nullable: true,
      default: null,
    };
  }

  const decorators: MethodDecorator[] = [
    ApiOkResponse({
      description: options.description || '请求成功响应',
      schema: {
        title: `响应数据 ${typeName}`,
        allOf: [
          {
            $ref: getSchemaPath(ResponseVO),
          },
          {
            properties: {
              data: responseData,
            },
          },
        ],
      },
    }),
  ];

  return (target, propertyKey, descriptor) => {
    ApiExtraModel([ResponseVO, type].filter(Boolean))(target.constructor);
    decorators.forEach(decorator => decorator(target, propertyKey, descriptor));
  };
};

另外还有一个Bug，使用ApiExtraModels绑定到Method也不生效，看源码貌似只对绑定到Class的数据进行了处理，因时间关系没有再行修复，而是直接改一下实现，手动绑定到类中

ApiExtraModel([ResponseVO, type].filter(Boolean))(target.constructor);