Added awk, ruby 1.8, crystal, C+musl, crystal+musl, dart and 3 js implementations.

[gorlowski]

Hi, I checked out your old startup-time benchmarks and added results for a few additional compilers + interpreters:

• awk
• ruby 1.8 (because it had a different interpreter architecture and i was curious to see a comparison)
• C static-linked with MUSL
• Crystal
• Crystal static-linked with MUSL
• NodeJS
• QuickJS
• Duktape JS
• Dart

I added some notes + my benchmark results to the README.

Feel free to cut out my notes if you want to just merge the rest. Also feel free to refactor or remove as much as you like before merging.

Thanks for the project! It was interesting for me to run the benchmarks and compare the results. Cheers.