feat(render): implement text rendering using ab_glyph

crates/obscura-render/src/style.rs

@@ -72,6 +72,7 @@ fn apply_value(style: &mut LayoutStyle, name: &str, value: &str) {
         "border-bottom-width" | "border-bottom" => set_edge(&mut style.border, Side::Bottom, px(value)),
         "border-left-width" | "border-left" => set_edge(&mut style.border, Side::Left, px(value)),
         "background-color" | "background" => style.background_color = parse_color(value),
+        "color" => style.color = parse_color(value),
         _ => {}
     }
 }