Add dedicated OS window bars (#22)

src/renderer/layouts/default-layout/player-bar.tsx

@@ -0,0 +1,17 @@
+import styled from 'styled-components';
+import { Playerbar } from '/@/renderer/features/player';
+
+const PlayerbarContainer = styled.footer`
+  z-index: 100;
+  grid-area: player;
+  background: var(--playerbar-bg);
+  filter: drop-shadow(0 -3px 1px rgba(0, 0, 0, 10%));
+`;
+
+export const PlayerBar = () => {
+  return (
+    <PlayerbarContainer id="player-bar">
+      <Playerbar />
+    </PlayerbarContainer>
+  );
+};