ilias bhallil

Fix: VSCode cannot find package typings

2

### Issue: VS code couldn't find the typings of the project. https://github.com/vadimdemedes/ink-testing-library/assets/9442803/945c9046-9cf7-4e67-ba99-21bb3db0dd98 ### What Has Been Done: I used the `types` attribute in package.json to ensure Vscode find the typings....

Readme: Add Polyfills Section

1

Just adding a polyfill section similar to what can be seen on [temporal proposal](https://github.com/tc39/proposal-temporal#polyfills)