Initial import of a purge type fails

This is happening because the entity type provided by the module incorrectly identifies itself as being a config entity that provides a bundle type for some other entity type. It does not do that.

I tested this on a clean install and after installing the dev version and changing to the bug fix branch there entity type definitions did not need updating so there's no upgrade path necessary here.

- The initial intention to potentially have a content entity as well for logging purge operations as well. This is not supported for now, and it might never be.
- The "bundle" configuration property is a bit different, it is a property used by the Entity module and it has to do with making the PurgeType config entity "bundleable" via the PurgeConfigurator plugin. That's also not needed right now in this module so we're good to remove that as well.

Thanks.

Automatically closed - issue fixed for 2 weeks with no activity.