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/serviceIcons.tsx

@@ -18,6 +18,7 @@ import {
     ShieldCheck,
     SlidersHorizontal,
     Table2,
+    UsersRound,
     Workflow,
     Waypoints,
     Zap,
@@ -29,6 +30,7 @@ import appConfigIcon from '@/assets/aws-services/appconfig.svg'
 import codeBuildIcon from '../../../../aws-icons-svg/Developer-Tools/CodeBuild.svg'
 import codePipelineIcon from '../../../../aws-icons-svg/Developer-Tools/CodePipeline.svg'
 import codeDeployIcon from '../../../../aws-icons-svg/Developer-Tools/CodeDeploy.svg'
+import cognitoIcon from '../../../../aws-icons-svg/Security-Identity-Compliance/Cognito.svg'
 import cloudFormationIcon from '@/assets/aws-services/cloudformation.svg'
 import cloudWatchLogsIcon from '@/assets/aws-services/cloudwatch-logs.svg'
 import dynamoDbIcon from '@/assets/aws-services/dynamodb.svg'
@@ -84,6 +86,7 @@ const SERVICE_ICONS: Record<string, LucideIcon> = {
     logs: ScrollText,
     iam: ShieldCheck,
     kms: Lock,
+    userpools: UsersRound,
     loadbalancing: Scale,
     parameters: SlidersHorizontal,
     configuration: SlidersHorizontal,
@@ -127,6 +130,7 @@ const AWS_SERVICE_ICON_ASSETS: Record<string, string> = {
     secrets: secretsManagerIcon,
     serverless: lambdaIcon,
     storage: s3Icon,
+    userpools: cognitoIcon,
     workflows: stepFunctionsIcon,
 }