Add simultaneous cursor example to https://yorkie.dev

[hackerwins]

Description:

We have developed a simultaneous cursor(multi-cursor) example for https://yorkie.dev and examples.

• PR: Creating simultaneous users' cursors movement example for SDK. yorkie-js-sdk#590
• Design: https://www.figma.com/proto/IBIiGml3fbfxgkSr14fSgy/Yorkie-(Sharing)?type=design&node-id=4552-184611&t=iAmanTZJDoJw3s5l-0&scaling=scale-down&page-id=4537%3A182659&starting-point-node-id=4552%3A184611&show-proto-sidebar=1

However, the example is not ready to display on the homepage.

Let's add the example to https://yorkie.dev/examples and https://yorkie.dev.

• Related to Implement Yorkie examples #11 and Implement multi cursor interactions #12

Why:

[banma1234]

fileInfo.ts is already exists, is anyone working on this issue?

can i try this if there's no one?

[hackerwins]

@banma1234 Of course. Please let me know, if you have any questions.

[hackerwins]

@banma1234 Thanks for your contribution. You can find the example by visiting the following page: Simultaneous Cursors on yorkie.dev.

To integrate this example into https://yorkie.dev, please refer to the following Pull Request (PR) for guidance on how to do so: Adding Example Page

The page that needs to be modified: Multi-Cursor