updating to use clerk auth with new routing to signin page by default

app/index.tsx

@@ -0,0 +1,18 @@
+import { SignedIn, SignedOut, useUser } from '@clerk/clerk-expo'
+import { Redirect } from 'expo-router'
+import { View } from 'react-native'
+
+export default function Page() {
+    const { user } = useUser()
+
+    return (
+        <View>
+            <SignedIn>
+                <Redirect href={'/home'} />
+            </SignedIn>
+            <SignedOut>
+                <Redirect href={'/(auth)/sign-in'} />
+            </SignedOut>
+        </View>
+    )
+}