Implement translucency for drawing the bingo card

[nolmoonen]

Implements the drawing of translucent items on the bingo card, see https://minecraft.wiki/w/Translucency. It's not a perfect solution (honey and slime still look a bit weird), but the stained glass becomes much more readable.

Before

After

Check the difference using

diff --git a/src/main/java/com/extremelyd1/bingo/BingoCard.java b/src/main/java/com/extremelyd1/bingo/BingoCard.java
index c51f624..3c2f110 100644
--- a/src/main/java/com/extremelyd1/bingo/BingoCard.java
+++ b/src/main/java/com/extremelyd1/bingo/BingoCard.java
@@ -61,6 +61,34 @@ public class BingoCard {
             }
         }
 
+        Material[] mats = {
+                Material.ICE,
+                // Material.FROSTED_ICE,
+                Material.SLIME_BLOCK,
+                Material.HONEY_BLOCK,
+                Material.TINTED_GLASS,
+                Material.WHITE_STAINED_GLASS,
+                Material.ORANGE_STAINED_GLASS,
+                Material.MAGENTA_STAINED_GLASS,
+                Material.LIGHT_BLUE_STAINED_GLASS,
+                Material.YELLOW_STAINED_GLASS,
+                Material.LIME_STAINED_GLASS,
+                Material.PINK_STAINED_GLASS,
+                Material.GRAY_STAINED_GLASS,
+                Material.LIGHT_GRAY_STAINED_GLASS,
+                Material.CYAN_STAINED_GLASS,
+                Material.PURPLE_STAINED_GLASS,
+                Material.BLUE_STAINED_GLASS,
+                Material.BROWN_STAINED_GLASS,
+                Material.GREEN_STAINED_GLASS,
+                Material.RED_STAINED_GLASS,
+                Material.BLACK_STAINED_GLASS
+        };
+
+        for (int i = 0; i < mats.length; i++) {
+            this.bingoItems[(i / BOARD_SIZE) % BOARD_SIZE][i % BOARD_SIZE] = new BingoItem(mats[i]);
+        }
+
         bingoCardInventory = new BingoCardInventory(bingoItems);
     }
 

[Extremelyd1]

Thanks for the PR, this looks much better!