feat: add documentation for video and audio preview

Author: devvaannsh

docs/05-Workspace/08-video-audio-preview.md

@@ -0,0 +1,19 @@
+---
+title: Video & Audio Preview
+slug: "/Features/video-audio-preview"
+---
+
+**Phoenix Code** plays video and audio files right in the editor. Click a media file in the file tree and it opens with playback controls, no setup needed.
+
+<!-- TODO: PLUTO - add image here showing a video playing in the editor -->
+
+Above the player you see the file's path, and below it the details: dimensions (for videos), duration, and file size.
+
+## Supported Formats
+
+- **Video**: `mp4`, `m4v`, `webm`, `mkv`, `ogv`, `mov`
+- **Audio**: `mp3`, `wav`, `ogg`, `m4a`, `flac`, `aac`, `aiff`
+
+> Whether a format plays can also depend on the codecs your operating system provides. If a file cannot be played, Phoenix Code shows a message stating that it cannot be played.
+
+Files up to 16 MB can be previewed. If you edit a media file outside Phoenix Code, the preview refreshes automatically.