Add benchmarks

[amirouche]

Have a way to run benchmarks:

• [ ] use linux perf-tools to gather statistics
• [ ] benchmark compilation separatly
• [ ] aggregation for:
  • [ ] memory use
  • [ ] wall-clock time
• [ ] benchmark safe and unsafe
• [ ] score board
• [ ] add a github actions that can only be run via the interface (ie. no triggers)

~ref: https://github.com/benchmark-action/github-action-benchmark~ ~ref: https://github.com/ecraven/r7rs-benchmarks/issues/60~ ~ref: https://github.com/ecraven/r7rs-coverage/issues/4~ ref: https://github.com/larcenists/larceny/tree/master/test/Benchmarking/R6RS/src ref: https://benchmarksgame-team.pages.debian.net/benchmarksgame/index.html ref: https://github.com/gothinkster/realworld ref: https://www.techempower.com/benchmarks/

[amirouche]

re github-action-benchmark is not what is needed. We would need something that can compare several implementations, and then aggregate the results of various metrics, and eventually get together a scoreboard.