Add notification popups (#540)

* Add notifications prototype

* Add timeout

* Improve function name

* Faster timeouts and fully clickable

* Update remove padding from old X button

* Only auto-dismiss when viewport is open

* Start auto dismiss once viewed

* Avoid redundantly displaying widget text as notifs

* Add sound effect

* Add setting for notifications

* Remove duplicate PluginSettings.StudioProvider

* Use short pop sound effect

* Fix broken audio, thanks Roblox

* Use e instead of createElement

plugin/src/Assets.lua

@@ -45,6 +45,9 @@ local Assets = {
 			[500] = "rbxassetid://2609138523"
 		},
 	},
+	Sounds = {
+		Notification = "rbxassetid://9716079936",
+	},
 	StartSession = "",
 	SessionActive = "",
 	Configure = "",
@@ -62,4 +65,4 @@ end
 
 guardForTypos("Assets", Assets)
 
-return Assets
+return Assets