Create a separate page for benchmark results

There's a few benchmarks in the runtime repo, but maybe those aren't very interesting. HTTP/WS etc would be more useful.

See https://deno.com/benchmarks for an example of how that might look. There's also some on the bun website: https://bun.sh/

TBD: What is worth comparing? NodeJS/Deno/Bun vs LuaJIT/Luvit? PUC Lua likely won't compete.