Closes #134885

This PR adds the new URI_PARTS command on top of an infrastructure for new type of commands that execute a single evaluation given a single input and produce a compound result. Since real compound column type is not supported (yet?), the evaluation results with multiple fields containing the same prefix. Hopefully, if and when we add support to compound (i.e. object-like) column type, it should be easy to change the type returned by such commands without making it a breaking change.

Key characteristics

• Syntax: URI_PARTS <uri-parts> = <uri>
• Computation is executed row-by-row
• As opposed to multi-EVAL, logical and physical plan nodes cannot be split, they always add the same attributes at the same order to the output schema
• The coordinating node determines the output fields and executing nodes populate exactly the predefined output columns. This ensures consistency in (presumably rare) cases where the cluster contains multiple node versions where local evaluation may produce different output.
• Allows pushing filters, limits and samples through it
• Can be pushed down through project and order-by nodes
• Allows constant/null replacement optimization

To-do list

• Integration testing through CSV tests
• Unit testing of parsing, analysis and optimizations
• Unit testing mismatch between predefined output fields and actual local evaluation output
• Implement, test and document that multi-value fields are not supported
• Use functionality from a new uri-parts library that is shared with the corresponding ingest processor
• Documentation
• Add generative tests