Created block loot table provider. Added firefly bush loot table.

src/main/java/dev/micle/firefly_bush_backport/data/loot/ModBlockLootTableProvider.java

@@ -0,0 +1,26 @@
+package dev.micle.firefly_bush_backport.data.loot;
+
+import dev.micle.firefly_bush_backport.block.ModBlocks;
+import net.minecraft.data.loot.BlockLootSubProvider;
+import net.minecraft.world.flag.FeatureFlags;
+import net.minecraft.world.level.block.Block;
+import net.minecraftforge.registries.RegistryObject;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Set;
+
+public class ModBlockLootTableProvider extends BlockLootSubProvider {
+    public ModBlockLootTableProvider() {
+        super(Set.of(), FeatureFlags.REGISTRY.allFlags());
+    }
+
+    @Override
+    protected void generate() {
+        this.dropSelf(ModBlocks.FIREFLY_BUSH.get());
+    }
+
+    @Override
+    protected @NotNull Iterable<Block> getKnownBlocks() {
+        return ModBlocks.BLOCKS.getEntries().stream().map(RegistryObject::get)::iterator;
+    }
+}