feat: added coal factory

src/main/java/cz/jull/Item.java

@@ -27,7 +27,8 @@ public enum Item implements Buildable {
     VILLAGER_HOUSE("Villager house", true),
     PUB("Pub", true),
     WINERY("Winery", true),
-    WELL("Well", true);
+    WELL("Well", true),
+    COAL_FACTORY("Coal factory", true),;
 
     static {
         WHEAT.function = game -> {
@@ -123,6 +124,14 @@ public enum Item implements Buildable {
             }
             return true;
         };
+
+        COAL_FACTORY.function = game -> {
+            if (!game.getBuildings().contains(Item.VILLAGER_HOUSE)) {
+                System.out.println(" "); // TODO
+                return false;
+            }
+            return true;
+        };
     }
 
     @Getter