Listeo Admin – Quick Featured / Verified Toggles for Listings

This code adds admin-side controls to manage two listing properties — Featured (_featured meta) and Verified (_verified meta) — directly from the WordPress listings management screen (post_type=listing), without modifying the listeo-core plugin. Everything lives in the theme's functions.php.

It provides three independent ways to set these flags:

1. Per-listing quick toggle buttons (a new column)

• Adds a "Featured / Verified" column to the listings list table, placed right before the existing Actions column.
• Each row shows two styled pill buttons:
  • ⭐ Featured — gold when active ("Featured"), grey when inactive ("Make Featured").
  • 🛡 Verified — green when active ("Verified"), grey when inactive ("Verify").
• Clicking a button toggles the corresponding meta value via a nonce-protected admin_init handler, then redirects back to a clean listings screen.
• A small CSS block (loaded only on the listings list screen via admin_head-edit.php) styles the buttons with dashicons, colors, fixed width, and hover effects.

2. Bulk actions dropdown

• Adds four entries to the Bulk actions dropdown: Make Featured, Remove Featured, Verify, Unverify.
• Select multiple listings → choose an action → Apply. The handle_bulk_actions-edit-listing handler updates each selected listing's meta and shows a success admin notice with the count.

3. Inline Bulk Edit panel fields

• Adds two — No Change — / Yes / No dropdowns (Featured and Verified) to the inline Bulk Edit panel (Bulk actions → Edit).
• "No Change" leaves each listing untouched; "Yes/No" sets the meta for all selected listings. Saved through save_post_listing during a bulk-edit submission.