feat: Add apps sidebar tab (#9342)

## Summary

<!-- One sentence describing what changed and why. -->

## Changes

- **What**: <!-- Core functionality added/modified -->
- **Breaking**: <!-- Any breaking changes (if none, remove this line)
-->
- **Dependencies**: <!-- New dependencies (if none, remove this line)
-->

## Review Focus

<!-- Critical design decisions or edge cases that need attention -->

<!-- If this PR fixes an issue, uncomment and update the line below -->
<!-- Fixes #ISSUE_NUMBER -->

## Screenshots (if applicable)

<img width="383" height="359" alt="image"
src="https://github.com/user-attachments/assets/47905196-9db6-4a57-8cf7-384d4d37d000"
/>

<img width="335" height="281" alt="image"
src="https://github.com/user-attachments/assets/843068f3-e895-4781-bf5f-e0eb86d3387c"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9342-feat-Add-apps-sidebar-tab-3176d73d3650812b822fc9cc3f17322e)
by [Unito](https://www.unito.io)

---------

Co-authored-by: github-actions <github-actions@github.com>

src/platform/workflow/management/composables/useAppsSidebarTab.ts

@@ -0,0 +1,15 @@
+import { markRaw } from 'vue'
+
+import AppsSidebarTab from '@/components/sidebar/tabs/AppsSidebarTab.vue'
+import type { SidebarTabExtension } from '@/types/extensionTypes'
+
+export const useAppsSidebarTab = (): SidebarTabExtension => {
+  return {
+    id: 'apps',
+    icon: 'icon-[lucide--panels-top-left]',
+    title: 'linearMode.appModeToolbar.apps',
+    tooltip: 'linearMode.appModeToolbar.apps',
+    component: markRaw(AppsSidebarTab),
+    type: 'vue'
+  }
+}