Use PolywrapClientConfig instead of parts of it in PolywrapProvider

[nerfZael]

Example use of the current PolywrapProvider:

const redirects = [];
const plugins = [];
<PolywrapProvider redirects{redirect} plugins={plugins}>
</PolywrapProvider>

A much cleaner (and similar to other react packages) interface would be:

const config = {};
<PolywrapProvider config={config}>
</PolywrapProvider>

[dOrgJelli]

Agreed 💯