Add Toastflow plugin to plugins.json

[adrianjanocko]

Added new plugin 'Toastflow' with relevant metadata.

Description

Brief description of what this PR adds or changes.

Type of Change

• 🔌 Adding a new plugin
• 🐛 Bug fix
• ✨ New feature
• 📚 Documentation update
• 🔧 Other (please describe)

---

Adding New Plugin Checklist

Complete this section only if adding a new plugin

Required Steps ✅

• Plugin added to public/plugins.json
• All required fields completed (id, name, description, category, packageName, githubUrl, author, tags, type)
• Plugin detail page tested and loads correctly
• Plugin information is accurate and up-to-date

Plugin Details

• Plugin Name: Toastflow
• Category: UI Framework
• Type: community
• GitHub URL: https://github.com/adrianjanocko/toastflow

---

General Checklist

• Code follows the project's style guidelines
• Self-review completed
• Testing completed (if applicable)
• Documentation updated (if needed)

[vercel]

@adrianjanocko is attempting to deploy a commit to the Monterail-com Team on Vercel.

A member of the Team first needs to authorize it.