Refactor backdrop and header to separate components

src/components/AppHeader.tsx

@@ -0,0 +1,20 @@
+import React, { useEffect } from 'react';
+
+const AppHeader = () => {
+    useEffect(() => {
+        // Initialize the UI components after first render
+        import('../scripts/libraryMenu');
+    }, []);
+
+    return (
+        <>
+            <div className='mainDrawer hide'>
+                <div className='mainDrawer-scrollContainer scrollContainer focuscontainer-y' />
+            </div>
+            <div className='skinHeader focuscontainer-x' />
+            <div className='mainDrawerHandle' />
+        </>
+    );
+};
+
+export default AppHeader;