implemented/added
1.Reset Volume Message Action - Resets volume to 100% and removes stored entry, with a Reset button in the popup
2. Media Element Count - Extends get-volume response to include exact count of media elements on the page
3. Relative Step Volume - Increment/decrement volume by arbitrary delta (clamped to 0-200)
4. Extended State Query - Returns richer snapshot: volume, hasMedia, isMuted, preMuteVolume
5. Volume Fade - Gradually transitions volume over specified steps and intervals
6. Badge Volume Display - Shows current volume level on toolbar icon badge
7. Volume Lock - Prevents websites from programmatically overriding volume on media elements
8. Scroll Wheel Volume Control - Adjust volume by scrolling mouse wheel over audio/video elements
9. mute/unmute

adding mute/unmute support

add volume state management and persist volume feature