* Remove image and animation_url from metadata modal
* Use animation_url for storing audio and video asset URIs
* Use image and animation_url keys together for audio/video assets
* Delete empty metadata keys
* Post-review update
* Accept audio & video files for upload
* Rename image related variables
* Implement getAssetType util
* Preview & upload support for video files
* Preview & upload support for audio files
* Preview update for audio files
* New look for audio previews on asset list
* Remove extra refs
Co-authored-by: findolor <anakisci@gmail.com>