[Feature Request] Support mouse scroll and middle click for volume control in COSMIC Player

[iamkartiknayak]

Issue/Description:
Add support for mouse interactions to control audio playback volume:

• Scrolling the mouse wheel over the player should increase/decrease the volume.
• Clicking the middle mouse button should toggle mute/unmute.

Version:

cosmic-player:
  Installed: 0.1.0~1752254868~24.04~55654e1

Other Notes:
This would improve accessibility and make quick audio adjustments more efficient without navigating menus or on-screen controls.