🩹 Fix #18: Give title to Move forms

screens/moves/MoveFormScreen.tsx

@@ -1,6 +1,6 @@
 // screens/moves/MoveFormScreen.tsx
 
-import React, { useState }                     from 'react';
+import React, { useEffect, useState }          from 'react';
 import { Button, StyleSheet, Text, TextInput } from 'react-native';
 import { StackNavigationProp }                 from '@react-navigation/stack';
 import { RootStackParamList }                  from "../../navigation/navigationTypes";
@@ -44,6 +44,12 @@ const MoveFormScreen = ({ navigation, route }: Props) => {
         schemaVersion: 2
     });
 
+    useEffect(() => {
+        navigation.setOptions({
+            title: route.params?.move ? route.params.move.name : 'New move',
+        });
+    }, [navigation, route.params?.move]);
+
     const [selectedWeakAgainst, setSelectedWeakAgainst] = useState<string[]>(move.type.weakAgainst);
     const [selectedEffectiveAgainst, setSelectedEffectiveAgainst] = useState<string[]>(move.type.effectiveAgainst);