Expose a method to change keyboard instance internal state before input value change

[XcrossD]

Description

Hi I was developing a React app for a touchscreen device and I ran into the same touchscreen cursor problem linked here

• Cursor position in Edge browser for a touch screen device #54
• Allow for setCaratPosition on keyboard react-simple-keyboard#616
• Moving the cursor via the drop shaped dot/object below the cursor in the middle of text and adding/removing character there is not working #1441

Since it doesn't seem like they will be fixing this issue, I thought if we can't listen to the event fired, we could try to sync up the cursor location before we change the input value. All current methods are called after the fact, so I went ahead and created the method beforeInputChange with the keyboard instance passed to it.
My use case will be calling keyboard.setCaretPosition(inputRef.current.selectionStart, inputRef.current.selectionEnd). If possible I would rather not maintain a fork of this awesome library. Please let me know what you think, thanks!

Checks

• I have read and followed the Contributing Guidelines.

npm run coverage

[github-actions]

👋 Hello @XcrossD! Please make sure to review the Contributing Guidelines to ensure your PR is compliant. Thank you!

[hodgef]

Thanks for the contribution @XcrossD, I will be taking a look

[github-actions]

This PR is stale because it has been open 5 days with no activity. It will be closed soon if no further activity occurs. Thank you!

[XcrossD]

Bumping to stay active.

[hodgef]

Thanks! The change is deployed:

• simple-keyboard: 3.7.81
• react-simple-keyboard: (auto deployment overnight, should be in by tomorrow).