Implement steps rate type

[albertoperdomo2]

Summary

This PR adds a new rate type steps to the suite of benchmarks. This new rate type allows the user to use --steps-duration to set a comma separated list of step duration values in seconds, and --steps-rate to set a comma separated list of rate values. This simulates, as the name implies, rate steps along time.

Details

• Added new CLI flags mentioned before: --steps-duration, --steps-rate.
• Added a new profile StepsProfile class.
• Implemented AsyncStepsStrategy scheduler strategy that handles the logic and includes the optional initial burst.
• Updated the create_profile function to handle the new arguments.

Test Plan

Related Issues

• Resolves #

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Use of AI

• Includes AI-assisted code completion
• Includes code generated by an AI application
• Includes AI-generated tests (NOTE: AI written tests should have a docstring that includes ## WRITTEN BY AI ##)