Added the firebase integration

src/General Scripts/checkDefeat.js

@@ -1,6 +1,7 @@
-const checkDefeat = (setEndOfGame, hangmanFrame) => {
+const checkDefeat = (setEndOfGame, hangmanFrame, setCorrectLetters, selectedWord) => {
     
     if (hangmanFrame >= 5) {
+        setCorrectLetters([...selectedWord])
         setEndOfGame('Defeat')
     }
 }