Issue #2984782 by amateescu, plach, catch, jibran, kristiaanvandeneynde: Add an API for converting entity type schemas to (non-)revisionable/(non-)translatable, with or without data

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2330121 by plach, effulgentsia, fago: Replace ContentEntityDatabaseStorage::getSchema() with a new EntityTypeListenerInterface implemented by SqlContentEntityStorageSchema.