feat: Add real-time search functionality with dynamic results

[bipulsikder]

Proposed Solution
Implement a real-time search feature that allows users to quickly find relevant documentation content.

check the demo Video also from here

then redirect to the clicked suggestion

Features:

• Dynamic search with real-time results
• Search through page titles, categories, and content summaries
• Relevance-based result ranking
• Result highlighting for matched terms
• Keyboard shortcuts (press '/' to focus search)
• Mobile-responsive design

Technical Implementation:

• Used Hugo's built-in .Site.Pages for generating the search index
• Implemented client-side search using JavaScript
• Added relevance scoring algorithm
• Debounced search for better performance
• Maximum 10 results shown for optimal UX

UI/UX Considerations:

• Dark theme compatible
• Accessible (proper ARIA labels)
• Keyboard navigation support
• Clear visual feedback for interactions
• Mobile-friendly design

Files Changed:

• Added: layouts/_default/search.json

• Added: layouts/partials/search.html

• Modified: layouts/partials/navbar.html

• Modified: package-lock.json

  check the demo Video also from here

[bipulsikder]

Please let me know your thoughts upon this @heliocastro @GMishx @KoukiHama

[KoukiHama]

Please agree eca for PR.
https://www.eclipse.org/legal/eca/

[bipulsikder]

Please agree eca for PR. https://www.eclipse.org/legal/eca/

Yes I have agreed the eca @KoukiHama