Leveling Up - First cabal benchmark

file to edit: https://github.com/haskell/cabal-userguide/blob/main/src/leveling_up/03_first_cabal_benchmark.md

## Brief Summary

The motivation for this section is to show new users how to benchmark the performance of their applications using cabal.

## Resources

[Old cabal user guide bench-marking reference](https://cabal.readthedocs.io/en/3.4/cabal-package.html#benchmarks)