feat(frontend): manage Cognito app clients and users

Adds a users panel under the selected user pool: copyable app client ids, a create-user form that follows the pool's sign-in method, and the user list with delete. Maps the userpools icon key to the Cognito artwork.

packages/frontend/src/components/DynamicResourceView.tsx

@@ -63,6 +63,7 @@ import { EcrImageBrowser } from "@/components/EcrImageBrowser";
 import { LoadBalancerPanel } from "@/components/LoadBalancerPanel";
 import { TargetGroupPanel } from "@/components/TargetGroupPanel";
 import { LoadBalancerListenerPanel } from "@/components/LoadBalancerListenerPanel";
+import { CognitoUsersPanel } from "@/components/CognitoUsersPanel";
 import { WorkflowExecutionDebugger } from "@/components/WorkflowExecutionDebugger";
 import { CodeBuildPanel } from "@/components/CodeBuildPanel";
 import { CodePipelinePanel } from "@/components/CodePipelinePanel";
@@ -969,6 +970,9 @@ export function DynamicResourceView({
       {service === "loadbalancing" && cloud === "aws" && (
         <LoadBalancerListenerPanel resource={activeSelected} runtimeReachable={canUseRuntime} />
       )}
+      {service === "userpools" && cloud === "aws" && (
+        <CognitoUsersPanel resource={activeSelected} runtimeReachable={canUseRuntime} />
+      )}
       {service === "compute" && (
         <ComputePanel
           cloud={cloud}