Added search providers

[HarshalAtre]

Summary

Implemented datalist-based search provider selection with real-time updates across all browser windows and changed default to no-ai version of DuckDuckGo for search

Changes Made

• Changed default string to no-ai version of DDG
• Added datalist dropdown to search provider input in settings page
• Implemented real-time updates across all open browser windows when search provider changes
• Added 11 privacy-focused search providers to the datalist options
• Maintained user experience with smooth clear/restore animation for datalist selection

Testing Performed

• npm run lint
• Multi-window testing: Verified search provider changes update all open windows in real-time
• Datalist functionality: Tested all 11 search providers work correctly
• User experience: Confirmed smooth transitions and proper datalist behavior
• Consistency check: All files now have matching search provider lists
• Backward compatibility: Existing functionality preserved

Related Issue

• Add Alternative search providers #298 Default to no-ai version of DuckDuckGo for search #316

Notes

• Users can still type custom search provider URLs containing %s
• Datalist provides quick selection while maintaining flexibility
• Real-time updates ensure consistent experience across multiple browser windows
• Clean implementation follows existing code patterns and best practices

[RangerMauve]

Thanks for the PR. Overall approach makes sense but there's a bunch of nitpicks.

How much of this PR was AI generated?

[HarshalAtre]

Thanks for the PR. Overall approach makes sense but there's a bunch of nitpicks.

How much of this PR was AI generated?

The initial draft was AI-assisted, but it wasn’t working correctly (as we discussed on Discord). I manually reworked the implementation to fix the issues, including making the datalist selection function properly.

There was also a UI glitch where a white background appeared after selection, which I resolved by adding additional handling logic.

So while the starting point was AI-generated, the majority of the final implementation and debugging was done manually.

[RangerMauve]

This looks great, thanks for the PR!

[RangerMauve]

Out in 2.22.0