Implement enum and conversion compatibility

tests/api-compile/src/lib.rs

@@ -176754,7 +176754,7 @@ fn member_29709() {
 }
 
 // C# member: `M:LibreMetaverse.Utils.EnumTryParse``1(System.String,``0@)`.
-fn member_29710<T>() {
+fn member_29710<T: libremetaverse_types::EnumValueMetadata>() {
     let _ = libremetaverse_types::Utils::enum_try_parse::<T>(argument(), argument());
 }