eslint for mobile + new maps API key + cleaning

mobile/traque-app/components/timer.jsx

@@ -0,0 +1,20 @@
+// React
+import { View, Text, StyleSheet } from 'react-native';
+// Util
+import { secondsToMMSS } from '../util/format';
+
+export const TimerMMSS = ({ title, seconds, style }) => {
+    return (
+        <View style={[styles.container, style]}>
+            <Text style={{fontSize: 15}}>{title}</Text>
+            <Text style={{fontSize: 30, fontWeight: "bold"}}>{secondsToMMSS(seconds)}</Text> 
+        </View>
+    );
+};
+
+const styles = StyleSheet.create({
+    container: {
+        alignItems: 'center',
+        justifyContent: 'center',
+    }
+});