Future benchmark tool features

[gkjohnson]

• Add the ability to chain before / after clean up / prep calls to benchmark functions (without messing up the table structure - just indentation)
• Adjust benchmark functions to support nested "suite" calls
• Add a cli that adds suite, bench, etc to global namespace like jest
• Add cmd options for iterations, max time per test
• Add option to log a custom table (or modify before logging?)
• Add option to retrieve test results and log custom transformations
• Add general benchmark compare ability to a cli tool for general use
• Add skip, todo, only functions