MoonBit native benchmark

You must have the following dependencies installed:

• MoonBit
• ocaml, javac & java, swiftc
• GNU time or compatible alternative

To build and execute the benchmarks, just run (in repo root directory):

ulimit -s unlimited # make stack size unlimited to prevent overflow
./run.sh

you can run a specific benchmark with:

./run.sh <benchmark-source-file-name-without-ext>

The benchmarks are ported from https://github.com/koka-lang/koka/tree/dev/test/bench.