[Records] Consolidate the three existing modules in a proper "RecordsBundle" bundle.

[netsensei]

Currently the code for the REST API, the OAI-PMH endpoint and the conversion / validation of LIDO XML records is spread out across 3 Symfony Bundles. This needs to be consolidated in one "RecordsBundle" in order to provide a better DX (Developer Experience).

Detailed description

Consolidate the OAIBundle, ResourceBundle and ResourceAPIBundle into a new RecordsBundle.

Context

This is important because it makes it simplifies the codebase, making it easier to understand and maintain the application.