feat: add support for multi-themes (#210)

* chore: update deps

* wip

* add themes

* add matrix theme

* add flexoki and spaceduck themes

* .

* simple theme change function

* .

* respect shadow and radius settings

* add rose pine themes

* toggle theme

crates/ui/src/notification.rs

@@ -295,8 +295,8 @@ impl Render for Notification {
             .border_1()
             .border_color(cx.theme().border)
             .bg(cx.theme().surface_background)
-            .rounded(cx.theme().radius * 1.6)
-            .shadow_md()
+            .rounded(cx.theme().radius_lg)
+            .when(cx.theme().shadow, |this| this.shadow_md())
             .p_2()
             .gap_3()
             .justify_start()