enum2pos vs enum2str vs enum_stringify

enum2pos is a rust derive macro for enums that generates "from_index(usize, Vec<String>) -> Option<Self>" and "to_index()" methods for converting between an variants and their position within the enum declaration (similar to an index).

enum2str is a rust derive macro that creates a Display impl for enums. This is useful for strongly typing composable sets of strings.

Macro to generate string conversion functions for enums