Added keyboard shortcuts to the video editor

[KoopaCode]

Pull Request Template

Description

Added keyboard shortcuts to the video editor: spacebar toggles play/pause, left/right arrow keys seek ±1 second.

Motivation

Allows faster and more video navigation using the keyboard.

Type of Change

• New Feature
• Bug Fix
• Refactor / Code Cleanup
• Documentation Update
• Other (please specify)

Related Issue(s)

N/A

Screenshots / Video

Video (if applicable):

https://i.nulz.host/vgLCH8Rkrq.gif

Testing

1. Open the video editor.
2. Press spacebar to toggle play/pause.
3. Use left/right arrow keys to seek backward/forward by 1 second.

Checklist

• I have performed a self-review of my code.
• I have added any necessary screenshots or videos.
• I have linked related issue(s) and updated the changelog if applicable.

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Thank you for contributing!

[FabLrc]

Hey, thanks for your work ! A configurable keyboard shortcuts system #172 will be soon merged into main, if you want, you can already adapt your PR to this new feature.

[siddharthvaddem]

#172 has been merged. If you can adapt your PR to sync with these new changes, that would be great 🙏

[siddharthvaddem]

Actually I think these would be fixed anyways, spacebar toggle is the de facto pause/play and left right keys make sense for moving as well. I think this should be good to merge once you resolve the conflicts.

[8sami]

please also add del key for deleting the selected element

[8sami]

also, the undo and redo dont work as they add a zoom instead pressing the Z key