Update to work with react 19

[benfc1993]

This implementation was not working with react 19, here is an implementation that does. I'm not sure if this is useful as it strays away from the video / talk contents.

The main changes are:

• use the react-server-dom-esm implementation from react rather than webpack
• remove the use of a client component manifest

I hope this is helpful

[benfc1993]

This will fix #12

[bholmesdev]

@benfc1993 Checking if you have context on these PR comments! Otherwise, I'll self-address and merge by EOW

[bholmesdev]

Taking a look at this now