ui: Add buffer_font method to labels (#24479)

Now you don't need to wrap the `Label` in a `div` anymore 

Release Notes:

- N/A

Co-authored-by: Danilo <danilo@zed.dev>

crates/ui/src/styles/color.rs

@@ -86,3 +86,9 @@ impl Color {
         }
     }
 }
+
+impl From<Hsla> for Color {
+    fn from(color: Hsla) -> Self {
+        Color::Custom(color)
+    }
+}