Updated SilkyRGB API

[chrizzo-hb]

I made some changes to the API, I hope you don't mind:

• I exposed the list of named colors through a new get-colors route
• I extended the payload of the get-palettes route to contain the color names
• I renamed some settings and replaced palette.invert with color.primary/color.secondary
• Additionally to setting a palette, users can now also set a primary/secondary color

In the ES menu, we now have 3 option lists:

• Palette lets you pick a palette
• Primary Color is automatically set to primary color of selected palette when a palette is selected
• Secondary Color is automatically set to secondary color of selected palette when a palette is selected
• Primary Color and Secondary Color can be changed by the users - in this case, Palette is automatically changed to Custom
• For SilkyRGB, only led.color.primary and led.color.secondary should be relevant now (it is still possible to also set a palette directly though, I did not change that, I only override it with primary/secondary color for now)

This gives users more flexibility to create their own custom palette, yet they can still benefit from the awesome presets you created!!

However, since they can now manually switch primary and secondary color anyway, the invert option is obsolete so I removed it.

I believe this change will streamline the API and make it a bit less confusing, yet more flexible for users.

I hope you agree with this change?