blitz-next-compilation: Create file transform rules

[ryardley]

For the compiler file synchronisation system, (packages/cli/src/scripts/synchronise) create a list of rules that hold the transform information (path, content).

Might be a good idea to separate the rules from the rest of the code in a rule configuration module so there is a clear way to add more.

Apply the rules to collect /pages and write them to the compiled next js /pages folder.