fix: add missing slabs tag to otherstone slabs

Closes #1176

Author: klikli-dev

src/generated/resources/data/minecraft/tags/block/slabs.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "occultism:otherstone_slab"
+  ]
+}

src/generated/resources/data/minecraft/tags/item/slabs.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "occultism:otherstone_slab"
+  ]
+}

src/main/java/com/klikli_dev/occultism/datagen/tags/OccultismBlockTagProvider.java

@@ -50,6 +50,7 @@ public void addMinecraftTags(HolderLookup.Provider provider) {
                 .add(OccultismBlocks.RAW_IESNIUM_BLOCK.get())
                 .add(OccultismBlocks.SPIRIT_LANTERN.get());
         this.tag(BlockTags.CAMPFIRES).add(OccultismBlocks.SPIRIT_CAMPFIRE.get()).replace(false);
+        this.tag(BlockTags.SLABS).add(OccultismBlocks.OTHERSTONE_SLAB.get()).replace(false);
         this.tag(BlockTags.CANDLES).addTags(OccultismTags.Blocks.OCCULTISM_CANDLES).replace(false);
         this.tag(BlockTags.CROPS).add(OccultismBlocks.DATURA.get()).replace(false);
         this.tag(BlockTags.LEAVES).add(OccultismBlocks.OTHERWORLD_LEAVES.get(), OccultismBlocks.OTHERWORLD_LEAVES_NATURAL.get()).replace(false);

src/main/java/com/klikli_dev/occultism/datagen/tags/OccultismItemTagProvider.java

@@ -155,6 +155,8 @@ private void addMinecraftTags(HolderLookup.Provider provider) {
     }
 
     private void addCommonTags(HolderLookup.Provider provider) {
+        this.copy(BlockTags.SLABS, ItemTags.SLABS);
+
         // Ore Blocks
         this.copy(OccultismTags.Blocks.IESNIUM_ORE, OccultismTags.Items.IESNIUM_ORE);
         this.copy(OccultismTags.Blocks.SILVER_ORE, OccultismTags.Items.SILVER_ORE);