Add Filament Tree View plugin

[mashema]

This PR adds the Filament Tree View plugin by Openplain to the plugin directory.

Plugin Details

Filament Tree View is a powerful drag-and-drop tree view for Filament resources
that provides a drop-in replacement for Table with hierarchical data management.

Key Features

• 🌳 Intuitive drag-and-drop reordering with visual feedback
• 📦 Familiar API similar to Filament Tables
• 🎯 Depth control to limit tree nesting
• 💾 Manual or auto-save modes
• 🎨 Custom fields (TextField and IconField)
• 🔧 Full support for Filament actions
• 🌗 Dark mode support
• ♿ Accessible with keyboard navigation and screen reader support

Technology

Built on proven libraries:

• Laravel Adjacency List (recursive relationships)
• Pragmatic Drag & Drop (Atlassian's library)
• Filament's core architecture and patterns

Links

• GitHub: https://github.com/openplain/filament-tree-view
• Packagist: https://packagist.org/packages/openplain/filament-tree-view
• License: MIT
• Filament Version: 4

Use Cases

Perfect for navigation menus, product categories, department hierarchies, and any
tree-structured data.

[mashema]

Hi @saade!

Thanks for merging this! I noticed the plugin isn't showing up on the live
site yet. Does the site need to be redeployed, or should I wait a bit longer
for it to appear?

Let me know if there's anything I can help with!

[saade]

Hey! Sorry it took a bit longer than expected. I’ve fixed the revert and the missing plugins are now back on the website.