new UltraPickaxe texture & green_to_alpha script

src/main/resources/assets/compressedblocks/textures/item/ultra_pickaxe.png.mcmeta

@@ -1,7 +1,7 @@
 {
     "animation": {
-        "frametime": 4,
+        "frametime": 3,
         "interpolate": true,
-        "frames": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+        "frames": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17]
     }
 }

src/main/scripts/green_to_apha.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+magick "$1" -transparent "#00ff00" "$1"