Fix Blog SEO Fields and Add Dashboard Widgets

[RabbitVisual]

Fixed SEO fields in Modules/Blog and added widgets to Admin/Support dashboards.

• Modules/Blog/app/Models/Post.php: Added meta_description and og_image to $fillable.
• Modules/PanelSuporte/app/Http/Controllers/BlogManagerController.php: Updated store and update methods to handle SEO fields.
• Modules/PanelAdmin/app/Http/Controllers/PanelAdminController.php: Calculated Blog Conversion Rate.
• Modules/PanelSuporte/app/Http/Controllers/SupportAgentController.php: Added logic to fetch pending comments.
• Modules/PanelSuporte/resources/views/dashboard.blade.php: Added Pending Comments table.
• Modules/PanelAdmin/resources/views/index.blade.php: Added Blog Conversion Rate card.
• Modules/Blog/resources/views/components/layouts/master.blade.php: Added og:image meta tag.
• Modules/Blog/resources/views/show.blade.php: Passed dynamic SEO data to layout.

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PR created automatically by Jules for task 9151503024128205399 started by @RabbitVisual

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