Renamed module to STPluginNeon

[jeanetienne]

Renamed the module NeonPlugin → STPluginNeon In order to avoid a name collision with the main type NeonPlugin.
This in turn, allows for easier disambiguation for projects that also have their own Theme or Colors type.

E.g. it is now possible to do this, even if your project has its own Theme type:

import SwiftUI
import STTextViewSwiftUI
import STPluginNeon

extension STPluginNeon.Theme {
    public static let myCustomTheme = STPluginNeon.Theme(colors: [:], fonts: [:])
}

Discussion

See issue #11

[krzyzanowskim]

thank you