feat: Major Upgrade to Video.js v8 — Integrated via Frontend Tools into MediaCMS React App

[Yiannistaos]

This PR introduces a clean and modern integration of the Video.js v8.23.3 player, replacing the previous version 7 setup, and streamlines the build and usage across the MediaCMS project.

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✨ Features

• 🚀 Major upgrade from Video.js v7 to v8.23.3.
• A new clean player setup was added under frontend-tools/video-js/ and is now automatically built and injected into the MediaCMS React app.
• A React component has been created to embed the new Video.js player directly in the MediaCMS frontend.
• The build process now supports running both video_editor and video_js with a single command.
• Global Prettier config improvements applied across all React apps.

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🧹 Chores & Fixes

• Removed obsolete video_editor folder.
• Added backup of old video_js files for reference.
• Fixed .prettierc to ensure all code is properly formatted.
• Updated static files after build to reflect the latest changes.

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🛠️ TODO (next steps)

The current integration is functional but missing some features from the previous player implementation. These will be migrated in follow-up PRs:

• Support for caching playback and settings.
• Handling of chapters and timeline metadata.
• Support for subtitles and multilingual tracks.
• Display of related videos at the end.
• Next video autoplay functionality.