Plugins + Scripts Empty Atom Preset Browser Trigger

Requested by @atani

This plugin will allow you to trigger (via buttons or other plugins) opening the VAM preset browser for any specific EMPTY atom in your scene, allowing you to change an Empty's preset more organically.

Instructions:
Add the plugin to any atom in your scene (best to not add it to the Empty atom you will be applying the presets to as this plugin will get replaced in those cases)

Select Target Atom in the plugin UI:
- Use the "Target Empty Atom" dropdown to select which Empty atom you want to load presets onto
- Click "Refresh Empty Atom List" if you've added new Empty atoms to the scene

Open Preset Browser:
- Click the "Open Preset Browser" button to open the file browser
Browse to your desired preset and load it.

Trigger Action (Optional, but where the real power of this plugin lies):
- You can also call the "OpenPresetBrowser" action from triggers such as buttons or other plugins to open the browser programmatically

Many thanks to @hazmhox for his Appearance swapper plugin which helped guide me to getting this plugin to work.