feat(editor): Add functionality to delete and rename folders (no-changelog)

[MiloradFilipovic]

Summary

• Implementing Delete Folder functionality
  
• Implementing rename folder functionality

Other fixes/improvements

• Folder cards now show both sub-folder and workflow counts
  
• Better error handling around workflow/folder fetching

Related Linear tickets, Github issues, and Community forum posts

Closes ADO-3159
Closes ADO-3158

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[codecov]

Codecov Report

Attention: Patch coverage is 45.47511% with 241 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...or-ui/src/components/Folders/DeleteFolderModal.vue	0.00%	188 Missing ⚠️
packages/editor-ui/src/api/workflows.ts	0.00%	26 Missing ⚠️
packages/editor-ui/src/stores/folders.store.ts	44.44%	10 Missing ⚠️
packages/editor-ui/src/stores/ui.store.ts	65.00%	7 Missing ⚠️
packages/editor-ui/src/views/WorkflowsView.vue	96.51%	5 Missing and 1 partial ⚠️
packages/editor-ui/src/components/Modals.vue	0.00%	4 Missing ⚠️

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