Internal
Given an u8a, and an array of Type constructors, decode the u8a against the types, and return an array of decoded values.
The result array (will be returned with values pushed)
The u8a to decode.
The array of CodecClass to decode the U8a against.
Given an u8a, and an array of Type constructors, decode the u8a against the types, and return an array of decoded values.