[DOC] Document core workflows for CLI and REST API parity

[smeragoel]

Context

conda-store has evolved a lot from when it was first created. It is important to document conda-store's core workflows to streamline development efforts, ensure consistency and maintain parity between the CLI and REST API.

The workflows can be reviewed in conda-store Workflows. This is a living document, so feel free to review and add comments.

Value and/or benefit

1. Guiding development efforts
2. CLI and REST API parity
3. A foundation for desiging the conda-store CLI
4. Improving overall conda-store UX

Related Issues

#858

[peytondmurray]

As a suggestion, it might be good to document this in the github wiki since this pertains to development work?

Drop a comment when it's officially done and we can move this to the wiki (or its final location in the docs).