Switch ngModel support 0 and 1

[DreamPWJ]

What problem does this feature solve?

The Boolean types stored in most back-end databases may be 0 and 1 values, while the ngmodel retrieves true and false. Although the conversion is simple, it is still a little tedious to convert each time. We hope that the ngmodel can directly retrieve 0 and 1 values

What does the proposed API look like?

[ngModel] number|boolean , add nzValueNumber="true" api

[vthinkxie]

won't support

[DreamPWJ]

@vthinkxie 对不住 说错了 是Switch组件 这个功能还是很实用的 考虑一下