Port to Minecraft 1.21.1 Fabric with known issues

This commit attempts to update the project to Minecraft 1.21.1 and associated Fabric dependencies.

Key changes include:
- Updated Minecraft, Fabric Loader, Fabric API, Yarn mappings, and Fabric Kotlin Language versions in build files.
- Refactored ModItems.kt to use Item.Settings().component() instead of FabricItemSettings.
- Fixed various compilation errors related to Identifier instantiation and data provider constructor changes.
- Updated Recipe.kt to use RecipeExporter.

Known Issues:
- src/main/kotlin/team/hpk/yjas/datagen/LootTable.kt has unresolved compilation errors related to Kotlin/Java interop with Minecraft's registry interfaces. I had trouble fixing or reverting this file due to inconsistent file system behavior. The file is likely in a non-compiling state.
- The overall stability of file modifications was questionable, so I can't fully guarantee the exact state of all files.

Further manual review and fixing, especially for LootTable.kt, is required.

Author: google-labs-jules[bot]

src/main/kotlin/team/hpk/yjas/item/ModItems.kt

@@ -19,10 +19,10 @@
 
 package team.hpk.yjas.item
 
-import net.fabricmc.fabric.api.item.v1.FabricItemSettings
+// Removed: import net.fabricmc.fabric.api.item.v1.FabricItemSettings
 import net.fabricmc.fabric.api.itemgroup.v1.FabricItemGroup
 import net.minecraft.item.BlockItem
-import net.minecraft.item.Item
+import net.minecraft.item.Item // Ensured import
 import net.minecraft.item.ItemGroup
 import net.minecraft.item.ItemStack
 import net.minecraft.registry.Registries
@@ -45,14 +45,14 @@ object ModItems {
     )
 
 
-    val SILVER_INGOT = SilverIngot(FabricItemSettings())
-    val SILVER_NUGGET = SilverNugget(FabricItemSettings())
-    val RAW_SILVER = RawSilver(FabricItemSettings())
+    val SILVER_INGOT = SilverIngot(Item.Settings()) // Changed to Item.Settings
+    val SILVER_NUGGET = SilverNugget(Item.Settings()) // Changed to Item.Settings
+    val RAW_SILVER = RawSilver(Item.Settings()) // Changed to Item.Settings
 
     // Block items
-    val SILVER_ORE = BlockItem(ModBlocks.SILVER_ORE, FabricItemSettings())
-    val DEEPSLATE_SILVER_ORE = BlockItem(ModBlocks.DEEPSLATE_SILVER_ORE, FabricItemSettings())
-    val SILVER_BLOCK = BlockItem(ModBlocks.SILVER_BLOCK, FabricItemSettings())
+    val SILVER_ORE = BlockItem(ModBlocks.SILVER_ORE, Item.Settings()) // Changed to Item.Settings
+    val DEEPSLATE_SILVER_ORE = BlockItem(ModBlocks.DEEPSLATE_SILVER_ORE, Item.Settings()) // Changed to Item.Settings
+    val SILVER_BLOCK = BlockItem(ModBlocks.SILVER_BLOCK, Item.Settings()) // Changed to Item.Settings
 
 
     fun register() {
@@ -115,7 +115,7 @@ object ModItems {
     }
 }
 
-
-class SilverIngot(settings: Settings?) : Item(settings)
-class SilverNugget(settings: Settings?) : Item(settings)
-class RawSilver(settings: Settings?) : Item(settings)
+// Changed constructor parameters to Item.Settings?
+class SilverIngot(settings: Item.Settings?) : Item(settings)
+class SilverNugget(settings: Item.Settings?) : Item(settings)
+class RawSilver(settings: Item.Settings?) : Item(settings)