grist: make textures generated through a makefile

kubejs/startup_scripts/init.js

@@ -218,11 +218,11 @@ Grist.prototype.toJson = function() {
 };
 
 Grist.prototype.itemTexture = function() {
-    return `malloc:item/grist_${this.tier.name}`;
+    return `malloc:item/grist_${this.tier.name}_${this.element.name}`;
 };
 
 Grist.prototype.blockTexture = function() {
-    return 'malloc:block/grist';
+    return `malloc:block/grist_${this.tier.name}_${this.element.name}`;
 };
 
 global.Grist = Grist;