feat: implement environment management features

- Added environment creation and editing pages with forms for name and description.
- Integrated environment listing with options to edit and delete environments.
- Updated agent detail page to manage environments followed by agents.
- Enhanced API to support environment operations including listing, creating, updating, and deleting environments.
- Refactored related components and state management for improved clarity and functionality.

cmd/flow/main.go

@@ -219,6 +219,7 @@ func serve() int {
 			Runs:              mongo.Runs(),
 			Agents:            mongo.Agents(),
 			Credentials:       mongo.Credentials(),
+			Environments:      mongo.Environments(),
 			Events:            eventBus,
 			Logs:              logs,
 		}),