Structure globale de l'application client

Signed-off-by: Emmy D'Anello <emmy@luemy.eu>

client/app/(tabs)/_layout.tsx

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+import { Tabs } from 'expo-router'
+import React from 'react'
+
+import { Colors } from '@/constants/Colors'
+import { useColorScheme } from '@/hooks/useColorScheme'
+import { FontAwesome6, MaterialIcons } from '@expo/vector-icons'
+
+export default function TabLayout() {
+  const colorScheme = useColorScheme();
+
+  return (
+    <Tabs
+      screenOptions={{
+        tabBarActiveTintColor: Colors[colorScheme ?? 'light'].tint,
+      }}>
+      <Tabs.Screen
+        name="index"
+        options={{
+          title: 'Carte',
+          headerShown: false,
+          tabBarIcon: ({ color }) => <FontAwesome6 name="map-location-dot" size={24} color={color} />,
+        }}
+      />
+      <Tabs.Screen
+        name="challenges"
+        options={{
+          title: 'Challenges',
+          headerTitleStyle: {fontSize: 32},
+          tabBarIcon: ({ color }) => <FontAwesome6 name="coins" size={24} color={color} />,
+        }}
+      />
+      <Tabs.Screen
+        name="train"
+        options={{
+          title: 'Ajouter un trajet',
+          headerTitleStyle: {fontSize: 32},
+          tabBarIcon: ({ color }) => <FontAwesome6 name="train" size={24} color={color} />,
+        }}
+      />
+      <Tabs.Screen
+        name="history"
+        options={{
+          title: 'Historique',
+          headerTitleStyle: {fontSize: 32},
+          tabBarIcon: ({ color }) => <MaterialIcons name="history" size={24} color={color} />,
+        }}
+      />
+    </Tabs>
+  );
+}