🔥 feat: Unleash Playground

[ivarconr]

Describe the feature request

As a user I would love to understand how activation strategies works. Given a "unleash context" I would like to see which toggles are enabled and disabled for that context.

Background

Given "environment" one or more "projects" and a "unleash context" the UI should show enabled and disabled feature toggles.

Things to consider:

• Also provide an API so you can check “programmatically” (almost an embedded proxy?)
  • Should we also support list of values? Given these 1000 userIds, which will be enabled. Need to also return context that matched in the result then. (Maybe a later iteration/separate API?)
• Reuse “legal values” for context fields
• Is it per project or across projects
• Show variant selected (if present)
• Can we add custom "refresh interval" with "pause" capability?
• Consider overlaying actual usage metrics

Solution suggestions

[ivarconr]

First iteration of this feature was included in v4.14.0.