refactor: split app into modular src architecture

src/components/ChipGroup.js

@@ -0,0 +1,18 @@
+import React from 'react';
+import { Pressable, Text, View } from 'react-native';
+import { styles } from '../styles';
+
+export default function ChipGroup({ options, value, onChange }) {
+  return (
+    <View style={styles.chipGroup}>
+      {options.map((option) => {
+        const active = value === option;
+        return (
+          <Pressable key={option} style={[styles.chip, active && styles.chipActive]} onPress={() => onChange(option)}>
+            <Text style={[styles.chipText, active && styles.chipTextActive]}>{option}</Text>
+          </Pressable>
+        );
+      })}
+    </View>
+  );
+}