feat(settings): add grouped configuration hub, languages and tray controls

crates/ferese-config/src/notifications.rs

@@ -1,6 +1,6 @@
 use serde::Deserialize;
 
-#[derive(Clone, Debug, Deserialize, PartialEq, Eq)]
+#[derive(Clone, Debug, Deserialize, PartialEq, Eq, schemars::JsonSchema, serde::Serialize)]
 #[serde(default, deny_unknown_fields)]
 pub struct NotificationConfig {
     pub show_popups: bool,