FAST multitenant bootstrap and resource management, rename org-level FAST stages

[ludoo]

This PR

• implements single tenant bootstrap and resource management stages
• renames all FAST stages
• implements optional tag key creation in the organization module
• adds a script to output links needed for each stage (fixes Create a script to link files to fast stages #1050)

There are a couple of features which will be nice to add to tenant bootstrap but which can wait for a subsequent PR, they are noted in its README. The security stage will also need to be changed accept a policy at the folder level, as this is one of the use cases which make sense.

[juliocc]

I'll do this one in parts. Here's a few comments/questions on the tenant bootstrap.

[juliocc]

IAM.md files are out of date