Scala Common Enrich: separate EnrichmentRegistry parsing from its construction

[BenFradet]

the workflow for an enrichment platform should be:

1. parse and validate enrichment jsons: Json -> F[List[EnrichmentConf]] (enrichment configs contain the files to cache)
2. cache files: List[EnrichmentConf] -> F[Unit] or Unit, this is up to the enricher
3. construct EnrichmentRegistry: List[EnrichmentConf] -> F[List[Enrichment]]
4. enrich: List[Enrichment] -> F[List[EnrichedEvent]]

We need to separate parsing from construction because some enrichments' constructions are side-effectful, for example referer parser which reads a file

[szareiangm]

can we have step3 produce [EnrichmentConf] -> F[List[Enrichment]]? It would help to have multiple API Request Enrichments

[BenFradet]

I added List instead of [] so it's clearer, however supporting multiple api request enrichments is not planned for this release.

[szareiangm]

That's okay. At least I will use the result of this issue for my issue. It would be ways more straight-forward.