docs: update badges in README for consistency and clarity

Add AI-powered email response generation feature

Loading spinner animation enhance

Add 2buttons accpet and reject button and also fix the formatting for replied mail

Fix scroller

Added direct mail redirection feature to email icon and scroller

Separated JS file for better structure

Separated CSS for better structure

Html file to show features and more

Add extension logo

Add icon and html for details

Merge branch 'master' of https://github.com/18-RAJAT/SpringAI-InboxAssistant

Enhance AI Reply Button with Improved UI, Debounced Observer & Error Handling

Modify manifest.json with updated permissions

add menifest.json file for metadata about a web app