New Display Modes options

• Added the ability to reset the display modes back to the core specified list without having to reinstall the core.
• Added the ability to control the way display modes are added. They can now be merged with the existing core specified list or the core specified list can be overwritten.
• Added the ability to exclude cores from the display_modes.json file. Specifically for the Spiritualized.GB core not supporting the GB display modes.

What's Changed

• Display Modes Updates by @hallem in #349
• get license filename from inventory api by @mattpannella in #350

Full Changelog: 3.18.0...3.19.0