You're after a tool, which is off topic. I'm also not going to do your work, but will provide you the steps you need :)
For your needs you can use Auto Hot Key
The logic is you copy text, iterate through and send each character
Pasting from the clipboard should be simple https://autohotkey.com/board/topic/103489-pasting-clipboard-contents/
You then iterate through each character in the clipboard https://autohotkey.com/docs/commands/LoopParse.htm
and finally send that character via Send