add gs

RCCService2018/content/internal/AppShell/Modules/Shell/Models/ScreenItem.lua

@@ -0,0 +1,21 @@
+local ScreenItem = {}
+
+ScreenItem.Priority = {
+	Default = 1,
+	Overlay = 2,
+	Elevated = 3,
+	Immediate = 4,
+}
+
+function ScreenItem.new(id, priority, data)
+	local self = {}
+
+	self.id = id
+	self.priority = priority
+	self.createdAt = tick()
+	self.data = data
+
+	return self
+end
+
+return ScreenItem