Create example code of v2 as like v1

[skwebs]

As like V1 please create Example Code for V2. It helps beginner to understand and crete project.

[fengyuanchen]

There are many simple examples in the API documentation, e.g.: https://fengyuanchen.github.io/cropperjs/v2/api/cropper-selection.html#examples

[skwebs]

I humbly request to add complete working example code with vanilla js, reactjs and other js framework on GitHub so beginners can understand or clone it and use it.

Something like : https://github.com/fengyuanchen/cropperjs/blob/main/docs/examples/cropper-in-modal.html