sizing guidance document

Ryan Kuo (taroface) commented:

Our Production Checklist mentions provisioning resources "for your workload" but doesn't provide further guidance on this.

A separate article on "sizing" a deployment for your applications needs is necessary. It should cover sizing:

- For workload
- For storage
- Antipatterns

Should include guidance on how to run load-test simulations, which help determine how to configure parameters such as the interval between `SIGTERM` and `SIGKILL` during node shutdown (relates to #6951).

@BramGruneir's interactive survivability app would also be appropriate to include here.

References:
- [CRDB Platform Provisioning guidance proposal](https://docs.google.com/document/d/1eYbjhoyY4HgpmPUilYBDhRCn1vOtXiV2RlbSog7ZXhU/edit#)
- [VMWare cookbook](https://docs.google.com/document/d/1Ub3sajyG5E4223KgVVX1x0nBrZSoJVkRajnupfaLLAQ/edit)
- [CRDB Sizing and Provisioning Guidance](https://docs.google.com/presentation/d/1GJ0vKgcwg1_Se-9_9BvLh1B5xA8wFuzokWMUGwUrbBg/edit#slide=id.p8)

Jira Issue: DOC-599