feat: rewrite app system

apps/main/src/components/Panel/Panel.tsx

@@ -0,0 +1,7 @@
+import { FunctionComponent, PropsWithChildren } from "react";
+import styles from "./Panel.module.css";
+export interface PanelProps extends PropsWithChildren {}
+
+export const Panel: FunctionComponent<PanelProps> = ({ children }) => {
+  return <div className={styles.root}>{children}</div>;
+};