Update to the Settings interface.

- Methods are now suffixed async
- Extension methods moved to the actual class and class renamed from SettingValue to Setting
- "Helpers" renamed to "SettingsProvider"
- Removed the ghetto CSV list method. Only setting using it was Pusher Channels which was orphaned by the new Kick channel feature. The call to ToList in the Chips.gg integration was incorrect and just proves lists should be consistently based around JSON objects instead of randomly string splitting

KfChatDotNetBot/Commands/JuiceCommand.cs

@@ -22,7 +22,7 @@ public class JuiceCommand : ICommand
         // Have to attach the entity because it is coming from another DB context
         // https://stackoverflow.com/questions/52718652/ef-core-sqlite-sqlite-error-19-unique-constraint-failed
         db.Users.Attach(user);
-        var juicerSettings = await Helpers.GetMultipleValues([
+        var juicerSettings = await SettingsProvider.GetMultipleValuesAsync([
             BuiltIn.Keys.JuiceAmount, BuiltIn.Keys.JuiceCooldown, BuiltIn.Keys.JuiceLoserDivision,
             BuiltIn.Keys.GambaSeshDetectEnabled, BuiltIn.Keys.JuiceAllowedWhileStreaming,
             BuiltIn.Keys.TwitchBossmanJackUsername, BuiltIn.Keys.JuiceAutoDeleteMsgDelay