Rename Flux, Pageable and other classes that are used for mapping data

[Artur-]

Is your feature request related to a problem? Please describe. When looking for the import for the Flux class, I do not want to see dev.hilla.runtime.transformtypes.Flux, only reactor.core.publisher.Flux

Describe the solution you'd like Rename it to FooBar

[cromoteca]

I suspect that, now that we use Jackson to parse Java, the transfer types are not needed anymore, as those types are parsed correctly. Let's investigate.

[Legioth]

Another possible approach might be to make the types package private, assuming that can be made to work together with Jackson.

[platosha]

We could combine several parser modules into a single one if that helps with this issue.

[platosha]

A simpler solution would be to rename the mapped type to an arbitrary name, and instead of generating it in TypeScript, generate an import for Flux from a Hilla npm package for that type.

[platosha]

Now that the @FromModule was introduced, what remains to do here is finding a replacement for using public empty records for representing these special types during generation.