Update template for React 18 and React-Redux v8

[markerikson]

We need to update this template to support React 18 and React-Redux v8.

This should include:

• Changing the template rendering setup to match React 18's createRoot(), per https://reactjs.org/blog/2022/03/08/react-18-upgrade-guide.html and Update templates to use React 18 createRoot facebook/create-react-app#12220
• Updating all dependencies to the latest
• Specifically updating react-redux to the latest 8.0-rc (and eventually 8.0 final, but I'd like to have the PR for the template ready before I release 8.0): https://github.com/reduxjs/react-redux/releases

Related TS template issue: reduxjs/redux-templates#65

[markerikson]

As a related note: I'd actually rather like to move both the templates into this repo, and maybe have a couple other templates here too?

The Next template already lives directly in the Next repo, at https://github.com/vercel/next.js/tree/canary/examples/with-redux . But, we don't have any kind of an official RN template, and it'd be nice to point to one of those too.

I did talk about this some in reduxjs/redux#4035 as well.

[souzaramon]

I would be happy to help

[souzaramon]

I'm starting at #53

[markerikson]

Merged the PR. Would you be interested in doing the TS template as well?