Document used services and who has access to each one

[jaimergp]

Use IaC to document and manage who has access to each infrastructure piece.

We have decided to use Pulumi mostly due to its Python scripting support (helpful for custom providers like anaconda.org) and the included cloud dashboard.

### Experiments
- [x] Start demo Github organization to try things out: https://github.com/infra-as-code-experiments
- [ ] Set up Pulumi repository holding the programs and configuration: https://github.com/infra-as-code-experiments/infra

### Packaging
- [ ] https://github.com/conda-forge/staged-recipes/pull/25941

Useful resources

• https://www.pulumi.com/blog/managing-github-with-pulumi/

[jaimergp]

xref https://www.pulumi.com/pricing/open-source-free-tier/

[jaimergp]

Started a demo organization that resembles current setup at https://github.com/infra-as-code-experiments