[Feature Request] Stress tester CLI

[cretz]

Is your feature request related to a problem? Please describe.

Today in TypeScript we have https://github.com/temporalio/sdk-typescript/blob/ca0d6e8622000d9f8da63b170dc043a3132c59c1/packages/test/src/load/starter.ts which is a relatively simple standalone process that runs a bunch of stressful client opts based on given CLI args. This is buried in the TS SDK and we want a general-purpose workflow stresser.

Describe the solution you'd like

• New CLI crate that can take either config or args (or both?) to define a scenario to stress. Langs can cargo run it.
• Needs to accept server addr
• Needs to accept workflow name, namespace, task queue, etc
• Needs to accept config/args for iterations/frequency/concurrency/etc to run workflow
• Needs to accept config/args for frequency to run queries
• Needs to accept PID for worker so it can obtain resource usage about it and expose/log it
• When run, needs to do the workflow(s) w/ frequency and metric exposure as requested via config/args

[cretz]

After recent discussion, we are going to try to reuse https://github.com/temporalio/xk6-temporal before writing this. Leaving open for now, but hopefully will close soon.