Add advanced/zeromemorycopy pkg

What's Changed

• Add Benchmark examples/gocollective example by @devlights in #565
• Add go collective example (check if a map contains key) by @devlights in #567
• Add go collective examples (print struct variables) by @devlights in #568
• Add go collective example (multiline strings) by @devlights in #569
• Update gomy version by @devlights in #570
• Add advanced/zeromemorycopy by @devlights in #571

Full Changelog: v0.4.3...v0.4.4