Add game lobby, registration, and game type pages

app/Screens/GameTypePage.jsx

@@ -0,0 +1,14 @@
+import React from 'react';
+import { View, Button } from 'react-native';
+
+const GameTypePage = () => {
+  return (
+    <View>
+      <Button title="Join Global Game" onPress={() => {}} />
+      <Button title="Join Private Game" onPress={() => {}} />
+      <Button title="Manage Private Game" onPress={() => {}} />
+    </View>
+  );
+};
+
+export default GameTypePage;