feat: added inventory showing

src/main/java/cz/jull/tui/Menu.java

@@ -18,7 +18,9 @@ public class Menu {
                 "See your stats" ));
         switch (index) {
             case 0 -> {
-
+                for (Item item : game.getPlayer().getInventory()) {
+                    System.out.println(item);
+                }
             }
             case 1 -> {
                 for (Item building : game.getBuildings()) {