fix: handle spaces in video-wallpapers folder path

[Ronin-CK]

Summary

This PR fixes an issue where the Video Wallpaper plugin fails to list any videos if the selected wallpapers folder path contains spaces (e.g., ~/Videos/Video Walls).

The Problem

The plugin uses a shell-based find command in to list video files. The folder variable was not quoted, causing the shell to split the path into multiple arguments, resulting in a "No such file or directory" error.

The Fix

• Added double quotes around ${root.folder} in the find command.
• Added -mindepth 1 to ensure the directory itself isn't returned in the results.

Verification

Verified manually by running the corrected command against a folder named Video Walls. The command now correctly returns the list of video files instead of throwing an error.

// common/FolderModel.qml
let command = `find "${root.folder}" -mindepth 1 -maxdepth 1`

[github-actions]

@spiros132 - this PR modifies your plugin. Please review when you have a chance.

[spiros132]

Thank you for the PR, looks good @ItsLemmy :)