feat: add sleep tracking features with leaderboard and user authentication

- Implemented a new HomePage component displaying the leaderboard.
- Created Providers component for session management using next-auth.
- Developed Header component for navigation and user authentication.
- Added Leaderboard component to fetch and display sleep data.
- Introduced SleepCard component for individual sleep entries.
- Created SleepForm component for logging sleep data with manual input options.
- Added SleepPhaseBar component to visualize sleep phases.
- Implemented utility functions for formatting and calculating sleep data.
- Set up authentication with Discord using next-auth and Prisma.
- Configured middleware for protected routes.
- Added TypeScript definitions for next-auth session.
- Configured Tailwind CSS for styling.
- Initialized TypeScript configuration for the project.

src/lib/auth.ts

@@ -0,0 +1,25 @@
+import { NextAuthOptions } from "next-auth";
+import DiscordProvider from "next-auth/providers/discord";
+import { PrismaAdapter } from "@next-auth/prisma-adapter";
+import { prisma } from "./prisma";
+
+export const authOptions: NextAuthOptions = {
+  adapter: PrismaAdapter(prisma),
+  providers: [
+    DiscordProvider({
+      clientId: process.env.DISCORD_CLIENT_ID!,
+      clientSecret: process.env.DISCORD_CLIENT_SECRET!,
+    }),
+  ],
+  callbacks: {
+    session({ session, user }) {
+      if (session.user) {
+        session.user.id = user.id;
+      }
+      return session;
+    },
+  },
+  pages: {
+    signIn: "/login",
+  },
+};