message: Add information to enable key-repeating on Mac when using VSCodium IDE
  It is just a minor improvement in the README.md file to allow VSCodium user to enable key-repeating in their favorite extension :)
diff: @@ -54,6 +54,7 @@ To enable key-repeating execute the following in your Terminal and restart VS Co
  ```sh
  $ defaults write com.microsoft.VSCode ApplePressAndHoldEnabled -bool false # For VS Code
  $ defaults write com.microsoft.VSCodeInsiders ApplePressAndHoldEnabled -bool false # For VS Code Insider
  +$ defaults write com.visualstudio.code.oss ApplePressAndHoldEnabled -bool false # For VS Codium
  $ defaults delete -g ApplePressAndHoldEnabled # If necessary, reset global default
  ```
  