Workspaces 3 create a workspace (#8221)

## Summary

Add workspace creation and management (create, edit, delete, leave,
switch workspaces).

  Follow-up PR will add invite and membership flow.

  ## Changes

  - Workspace CRUD dialogs
  - Workspace switcher popover in topbar
  - Workspace settings panel
  - Subscription panel for workspace context
  

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8221-Workspaces-3-create-a-workspace-2ef6d73d36508155975ffa6e315971ec)
by [Unito](https://www.unito.io)

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

src/components/dialog/content/setting/WorkspaceSidebarItem.vue

@@ -0,0 +1,19 @@
+<template>
+  <div class="flex items-center gap-2">
+    <WorkspaceProfilePic
+      class="size-6 text-xs"
+      :workspace-name="workspaceName"
+    />
+
+    <span>{{ workspaceName }}</span>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { storeToRefs } from 'pinia'
+
+import WorkspaceProfilePic from '@/components/common/WorkspaceProfilePic.vue'
+import { useTeamWorkspaceStore } from '@/platform/workspace/stores/teamWorkspaceStore'
+
+const { workspaceName } = storeToRefs(useTeamWorkspaceStore())
+</script>