Refactor screen names for consistency and rename component files to match updated naming conventions

app/Screens/CreateGamePage.js

@@ -0,0 +1,34 @@
+import React from 'react';
+import {StyleSheet, Text, View} from 'react-native';
+import ScreenHeader from '../components/ScreenHeader';
+
+const CreateGamePage = () => {
+  return (
+    <View style={styles.wrapper}>
+      <ScreenHeader title="Create Game" />
+      <View style={styles.container}>
+        <Text style={styles.body}>Create game setup goes here.</Text>
+      </View>
+    </View>
+  );
+};
+
+const styles = StyleSheet.create({
+  wrapper: {
+    flex: 1,
+    backgroundColor: '#ffffff',
+  },
+  container: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+    padding: 20,
+  },
+  body: {
+    color: '#4b5563',
+    fontSize: 15,
+  },
+});
+
+export default CreateGamePage;
+