Here's a weird hack on Windows
1. Create a new Windows shortcut on your desktop (or anywhere)
2. Put the following as the location:
jetbrains://WebStorm/settings?name=Tools--NetSuite--Project+Settings
3. Click Next. Set the name of your shortcut to something like "SDF Project Settings", and click Finish
4. Right click on the new shortcut, and open Properties
5. In the Shortcut Key field, press your desired shortcut keys
The shortcut will run from anywhere in Windows, but it will not work correctly unless you have a WebStorm window in focus.