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/styled.rs

@@ -78,7 +78,7 @@ pub trait StyledExt: Styled + Sized {
             .border_1()
             .border_color(cx.theme().border)
             .shadow_lg()
-            .rounded_lg()
+            .rounded(cx.theme().radius_lg)
     }
 }