As we've added double clicking onto actors to focus them, we can use this new double-click feature in the AssetBrowser to quickly open/edit assets.

For instance, double-clicking a scene could open it, while double clicking a material could show it in the material inspector.

Actions per assets:

• Material : Open in Material Editor
• Scene : Open in scene view
• Shader : Open with default app
• Texture : Open with default app
• Model : Open with default app
• Sound : Open with default app