implement initial file and folder structure

app/(auth)/layout.tsx

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+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <main>
+      {children}
+    </main>
+  );
+}

app/(auth)/sign-in/page.tsx

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+import React from 'react'
+
+const SignIn = () => {
+  return (
+    <div>SignIn</div>
+  )
+}
+
+export default SignIn

app/(auth)/sign-up/page.tsx

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+import React from 'react'
+
+const SignUp = () => {
+  return (
+    <div>SignUp</div>
+  )
+}
+
+export default SignUp

app/(root)/layout.tsx

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+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <main>
+      SIDEBAR
+      {children}
+    </main>
+  );
+}

app/(root)/page.tsx

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+import React from 'react'
+
+const Home = () => {
+  return (
+    <div>Home</div>
+  )
+}
+
+export default Home