On the server we have a similar translation map from the file path that the
loader uses to the refer to the original module and to the bundled module ID.
The Flight server is optimized to emit the smallest format for the client.
However during SSR, the same client component might go by a different
module ID since it's a different bundle than the client bundle.
This provides an option to add a translation map from client ID to SSR ID
when reading the Flight stream.
Ideally we should have a special SSR Flight Client that takes this option
but for now we only have one Client for both.
* Move files
* Update paths
* Rename import variables
* Rename /server to /writer
This is mainly because "React Server Server" is weird so we need another
dimension.
* Use "react-server" convention to enforce that writer is only loaded in a server
Sebastian Markbåge