feat: enhance SEO capabilities and add All Tools page

- Updated generate-seo-assets script to create separate sitemap files for static, blog, tools, and SEO pages.
- Introduced render-seo-shells script to generate HTML shells for SEO pages with dynamic metadata.
- Added All Tools page with categorized tool listings and SEO metadata.
- Updated routing to include /tools path and linked it in the footer.
- Enhanced SEOHead component to remove unused keywords and improve OpenGraph metadata.
- Updated translations for tools hub in English, Arabic, and French.
- Refactored SEO-related utility functions to support new structured data formats.

frontend/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "dev": "vite",
     "prebuild": "node scripts/merge-keywords.mjs && node scripts/generate-seo-assets.mjs",
-    "build": "tsc --noEmit && vite build",
+    "build": "tsc --noEmit && vite build && node scripts/render-seo-shells.mjs",
     "preview": "vite preview",
     "lint": "eslint .",
     "test": "vitest run",