chore: remove deprecated files and configurations

- Deleted .gitignore, biome.json, next.config.ts, package.json, pnpm-lock.yaml, pnpm-workspace.yaml, postcss.config.mjs, README.md, and various API, component, and utility files to clean up the codebase.
- Removed unused database files and migration scripts to streamline the project structure.
- Eliminated obsolete hooks and services to enhance maintainability and reduce clutter.

app/layout.tsx

@@ -1,25 +0,0 @@
-import type { Metadata } from "next";
-import { Inter } from "next/font/google";
-import "./globals.css";
-import { ThemeProvider } from "../components/theme-provider";
-
-const inter = Inter({ subsets: ["latin"], variable: "--font-inter" });
-
-export const metadata: Metadata = {
-  title: "Create Next App",
-  description: "Generated by create next app",
-};
-
-export default function RootLayout({
-  children,
-}: Readonly<{
-  children: React.ReactNode;
-}>) {
-  return (
-    <html lang="en" suppressHydrationWarning>
-      <body className={`${inter.variable} antialiased`}>
-        <ThemeProvider>{children}</ThemeProvider>
-      </body>
-    </html>
-  );
-}