How to add an external value at the cursor position in the editor

[MrRaines]

Checklist

• This is not covered in the repository examples.
• I am using the package latest version.
• This is a bug report or an enhancement proposal.

Description

I want to be able to add an external value at the cursor position in the editor. F.E. if a user click on a chip the value of the chip should be added at the cursor location in the editor. just like you can accomplish with the autocomplete function

codesanbox link:
https://codesandbox.io/s/mui-rte-basic-forked-eozd2h?file=/src/index.js