Initial login/register screens

src/app/navigation/AuthNavigator.js

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+import React from "react";
+import { createStackNavigator } from "@react-navigation/stack";
+import LoginScreen from "../screens/LoginScreen";
+import RegisterScreen from "../screens/RegisterScreen";
+
+const Stack = createStackNavigator();
+
+const AuthNavigator = () => (
+  <Stack.Navigator>
+    <Stack.Screen
+      name="Login"
+      component={LoginScreen}
+      options={{ headerShown: false }}
+    />
+    <Stack.Screen
+      name="Register"
+      component={RegisterScreen}
+      options={{ headerShown: false }}
+    />
+  </Stack.Navigator>
+);
+
+export default AuthNavigator;

src/app/screens/LoginScreen.js

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+import React from "react";
+import { StyleSheet, View, Text } from "react-native";
+
+export default function LoginScreen() {
+  return (
+    <View style={styles.containter}>
+      <Text>Login</Text>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  containter: {
+    flex: 1,
+    justifyContent: "center",
+    alignItems: "center",
+  },
+});

src/app/screens/RegisterScreen.js

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+import React from "react";
+import { StyleSheet, View, Text } from "react-native";
+
+export default function RegisterScreen() {
+  // TODO: Implement this screen as needed
+
+  return (
+    <View style={styles.containter}>
+      <Text>Registro</Text>
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  containter: {
+    flex: 1,
+    justifyContent: "center",
+    alignItems: "center",
+  },
+});