Use Functions for E2 Descriptions

[Denneisk]

For future-proofing, allow using a function to create E2 descriptions with the following structure as an argument:

• name string - Identifier of the function, without any other designators
• description string? - Description of the function
• params table? - A list of of the inputs in definition order, as an array of { [1] = Type:string, [2] = Name:string }
• returns string|table? - As a string, the return type. As a table, the structure { [1] = Type:string, [2] = Name:string }
• deprecated true? - Whether the function is deprecated
• cost number? - As a number, the default op cost of the function.
• dynamicCost true? - Whether the function has a dynamic cost to it

This would allow using full type names on the developer side and make modernization of the E2Helper easier.

If ever transitioning to using a comment-based E2function parser, this structure will be or should become nearly compatible with such a parser.