Analyze table function arguments

[kasiafi]

This PR adds the Analyzer support for table and descriptor arguments of table functions. These arguments are not yet supported in further phases of query processing, and they are caught in RelationPlanner.

No docs required. We should document how table and descriptor arguments work when we add full support for them.

Some SPI changes are introduced. However, the affected classes are marked as experimental, so probably we don't need to announce the changes in the release notes. Also, the changed classes can't be effectively used, as the related argument types are not supported beyond the Analyzer.

Beside the SPI changes mentioned above, no release notes required.