Update dependencies

[Shiroh1ge]

• Updated dependencies
• Moved React app to TypesScript and added all examples in the app.
• Tested all examples, found 2 issues:
  1. close-vault-with-dex.ts returns an error expecting 2 arguments, interface from typings looks correct though and accepts 3 args.
  2. Using the swapWithSdk results in an error, originating from the @polkadot/utils module. After debugging a bit it appears this module doesn't get resolved properly, most likely it's something to do with the webpack config, which I didn't manage to debug. I tried swapping in an Angular app and it worked correctly, so I'm assuming it's something to do with the React setup and not with any of the packages.

[sonicsmith]

This fixes the issues I was having with master branch 👍

[Shiroh1ge]

This PR is a bit stale, as there are probably new changes to the packages, I can spend some time later to update it to the latest ones if it helps you