Open
Description
It is already trivial to namespace functions (#329), and make template functions of a language (#804).
It should be a simple enough adjunct scenario to make a "language function". That is, a PowerShell function that wraps a specific set of functionality in a given language. It is expected that these functions will invoke the interpreters of the language, and this should be a "happy path" of declaring a language function (turning a language template into a file, then invoking it).
These functions should be easily recognized by naming patterns, and thus it should be easy to expose them for any number of languages with some subtle extended types changes.