chore(NODE-6733): add a cpu benchmark

[nbbeeken]

Description

What is changing?

Is there new documentation needed for these changes?

What is the motivation for this change?

• add a cpu benchmark for scale

Double check the following

• Ran npm run check:lint script
• Self-review completed using the steps outlined here
• PR title follows the correct format: type(NODE-xxxx)[!]: description
  • Example: feat(NODE-1234)!: rewriting everything in coffeescript
• Changes are covered by tests
• New TODOs have a related JIRA ticket

[nbbeeken]

primes
  total time: 60.05528267600001 sec, ran: 830 times, median time per run: 0.07205687899999612 sec, throughput: 43.57807392685117 mb/sec