feat(cms): implement complete SysSiteCMS content management system

Initial implementation of the HomeSysPanel CMS built with Laravel 13.0.
Includes complete admin panel, content management, user authentication,
modular architecture for products/services/chatbot, and marketing tools.

Key features:
- User authentication with email verification and password reset
- Role-based access control (Admin/User with granular permissions)
- Content management (pages, news, FAQ, downloads, galleries, banners)
- Contact management system with subjects and responses
- Marketing tools (email campaigns, visitor analytics, social sharing)
- Modular architecture (Products, Services, Chatbot modules)
- AI Chatbot integration with OpenRouter.ai and LlamaCpp support
- Visitor tracking with geolocation
- SEO optimization with meta tags and Open Graph
- Responsive design with Bootstrap 5
- Dark mode support
- Maintenance mode
- Feature request system

storage/app/.gitignore

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+*
+!private/
+!public/
+!.gitignore

storage/app/private/.gitignore

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+*
+!.gitignore

storage/app/public/.gitignore

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+*
+!.gitignore

storage/framework/.gitignore

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+compiled.php
+config.php
+down
+events.scanned.php
+maintenance.php
+routes.php
+routes.scanned.php
+schedule-*
+services.json

storage/framework/cache/.gitignore

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+*
+!data/
+!.gitignore

storage/framework/cache/data/.gitignore

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+*
+!.gitignore

storage/framework/sessions/.gitignore

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+*
+!.gitignore

storage/framework/testing/.gitignore

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+*
+!.gitignore

storage/framework/views/.gitignore

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+*
+!.gitignore

storage/logs/.gitignore

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+*
+!.gitignore