SNOW-2258879 show compute pool instance families

[sfc-gh-anandanwar]

Pre-review checklist

• I've confirmed that instructions included in README.md are still correct after my changes in the codebase.
• I've added or updated automated unit tests to verify correctness of my new code.
• I've added or updated integration tests to verify correctness of my new code.
  • Not required as show compute pool instance families; is just a read only command.
• I've confirmed that my changes are working by executing CLI's commands manually on MacOS.
• I've confirmed that my changes are working by executing CLI's commands manually on Windows.
• I've confirmed that my changes are up-to-date with the target branch.
• I've described my changes in the release notes.
• I've described my changes in the section below.

Changes description

This PR adds support for the new show compute pool instance families; command in SPCS. This is supposed to list all the instance families that we currently support in the deployment that users can use to create compute pools. Currently, users need to refer to our public doc to get this information. The new command offers the latest information programatically.

• Public Doc: CREATE COMPUTE POOL
• Writeup: SPCS Show Compute Pool Families View

snow spcs compute-pool show-instance-families

[sfc-gh-anandanwar]

• SNOW-2258879 show compute pool instance families #2533 👈 (View in Graphite)
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.