sql: add internal tables cross db refs and interleaved indexes/tables

[jseldess]

PR: cockroachdb/cockroach#61629

From release notes:

Previously, users had no way of determining which objects in their database utilized deprecated features like interleaved indexes/tables or cross-database references. Added crdb_internal tables cross_db_references, interleaved_indexes, and interleaved_tables for detecting these deprecated features within a given database. [#61629][#61629] {% comment %}doc{% endcomment %}