Move metastore interface to new module

[electrum]

Release notes

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[findinpath]

@electrum pls add a description to the PR. This makes it easy for other parties to chime in and provide potentially good feedback.

By skimming the commit messages, this feels like a refactoring - to move metastore related content to lib/trino-metastore.
Being a refactoring there's definitely no business value here to argue about.
However, I'd like to understand the drive of this refactoring.

Are we looking at getting rid of the following dependency from trino-iceberg, trino-delta-lake, trino-hudi:

        <dependency>
            <groupId>io.trino</groupId>
            <artifactId>trino-hive</artifactId>
        </dependency>

?

[electrum]

Thanks, the title got lost when I created the PR. This is a cleanup / refactoring that pulls the shared metastore code out of the Hive connector. I'll move the implementations later.

The refactoring forced a cleanup of some unintentional dependencies. It helps a bit with build times and in general it's good to have fewer dependencies on code inside the Hive connector for Iceberg, etc.

I don't have any explicit goal to completely remove the dependency on the Hive connector, and it's not clear yet if that is worthwhile, but this moves us in that direction.