eslint for mobile + new maps API key + cleaning

mobile/traque-app/components/button.jsx

@@ -0,0 +1,39 @@
+// React
+import { forwardRef } from 'react';
+import { TouchableHighlight, View, Text, StyleSheet } from "react-native";
+
+export const CustomButton = forwardRef(function CustomButton({ label, onPress }, ref) {
+    return (
+        <View style={styles.buttonContainer}>
+            <TouchableHighlight style={styles.button} onPress={onPress} ref={ref}>
+                <Text style={styles.buttonLabel}>{label}</Text>
+            </TouchableHighlight>
+        </View>
+    );
+});
+
+const styles = StyleSheet.create({
+    buttonContainer: {
+        width: "100%",
+        maxWidth: 240,
+        height: 80,
+        alignItems: 'center',
+        justifyContent: 'center',
+        padding: 3,
+        borderWidth: 4,
+        borderColor: '#888',
+        borderRadius: 18 
+    },
+    button: {
+        borderRadius: 10,
+        width: '100%',
+        height: '100%',
+        alignItems: 'center',
+        justifyContent: 'center',
+        backgroundColor: '#555' 
+    },
+    buttonLabel: {
+        color: '#fff',
+        fontSize: 16,
+    },
+});