Add memory profiler to prover

[jonathanpwang]

Add a very lightweight memory profiler to the prover or SDK to measure peak memory usage.
Prometheus metrics may be a good candidate.

[prsabahrami]

@jonathanpwang @yi-sun I'd love. to take care of this! Would you mind assigning it to me?

[yi-sun]

Assigned!

[jonathanpwang]

@prsabahrami this may help: https://docs.rs/metrics-process/latest/metrics_process/ It is what reth uses.

[prsabahrami]

@jonathanpwang Thanks!!