add construction core multiblock

easier to build now yahoo

kubejs/startup_scripts/recipes/construction_core.js

@@ -0,0 +1,10 @@
+GTCEuStartupEvents.registry("gtceu:recipe_type", (event) => {
+  event
+    .create("construction_core")
+    .category("test")
+    .setEUIO("in")
+    .setMaxIOSize(2, 1, 1, 0)
+    .setSlotOverlay(false, false, GuiTextures.BOX_OVERLAY)
+    .setProgressBar(GuiTextures.PROGRESS_BAR_BATH, FillDirection.LEFT_TO_RIGHT)
+    .setSound(GTSoundEntries.COOLING);
+});