We need to create and use ZErrors that represents "this programming language is not supported" and/or "programming language not found". Not to be confused with Z540 (Invalid Language Code) and Z541 (Language Code Not Found), which are for natural languages.
- Add definition to function-schemata
- Add to https://meta.wikimedia.org/wiki/Abstract_Wikipedia/Representation_of_errors#Pre-defined_Error_Types
- Add to https://meta.wikimedia.org/wiki/Abstract_Wikipedia/Reserved_ZIDs#Core_error_types
- Use in function-evaluator