[Feature Request]: Visual feedback when using keybinds

[BrunoMiguelDC]

Preflight checklist

• I have searched the issue tracker for a bug report that matches the one I want to file, without success.
• I have searched the features list for this feature, and I couldn't find it.
• I have checked that I'm using the latest stable version of the app.

Problem Description

When you use the scroll wheel to change volume the percentage is displayed. It would be useful to also have it on playback rate and when cycling through subs. There could be others like the +90 sec but I'll leave that to your discretion.

Proposed Solution

Have the current sub track and playback rate displayed on screen when pressing the keybind just like the volume scroll.