Prefect settings are critical for a number of features / patterns:

• authentication with APIs & UIs
• setting defaults such as retries, result persistence, etc.
• configuration such as logging
• enabling/disabling experimental feature flags

But right now it's not always clear when and where to set these settings, and settings cannot be sanely grouped. Ideally the settings a flow requires can be stored in a file right next to the flow code itself and is always enforced.

This milestone represents a themed body of work whose end result should be a greatly improved experience when dealing with Prefect settings and profiles.