Ruby Benchmark: Data.define, Struct, OpenStruct

As I was working on another email part of my Modern Ruby course via email I wanted to make some micro benchmarks on Data.define vs Struct vs OpenStructThey are not a production-level benchmark, so take them with a grain of salt.I added all code and results in a repo at https://github.com/lucianghinda/value-object-in-ruby-benchmarks.