remove legacy plugin and server versions from gradlew

nms/v1_21R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/datapack/DataPackTester.kt

@@ -0,0 +1,38 @@
+package xyz.alexcrea.cuanvil.dependency.datapack
+
+import io.papermc.paper.datapack.Datapack
+import org.bukkit.Bukkit
+import org.bukkit.packs.DataPack
+import java.util.*
+
+object DataPackTester {
+    val legacyNames: List<String>
+        get() = Bukkit.getDataPackManager().dataPacks
+            .stream().filter { obj -> obj.isEnabled }
+            .map { pack -> pack.key.key }
+            .toList()
+
+    val enabledPacks: List<String>
+        get() {
+            try {
+                // will throw error if do not exist
+                Bukkit::class.java.getDeclaredMethod("getDatapackManager")
+
+                return Bukkit.getDatapackManager().enabledPacks
+                    .stream().map { obj: Datapack -> obj.name }
+                    .toList()
+            } catch (e: NoSuchMethodException) {
+                try {
+                    DataPack::class.java.getDeclaredMethod("getKey")
+                } catch (e: NoSuchMethodException) {
+                    System.err.println("Could not find compatible datapack manager")
+                    System.err.println("If you are using a datapack that should be compatible with CustomAnvil. It will not get detected...")
+                    return emptyList()
+                }
+                return legacyNames
+            } catch (e: Exception){
+                // Assume cause UnimplementedOperationException on mock server
+                return Collections.emptyList()
+            }
+        }
+}

nms/v1_21R1/src/main/kotlin/xyz/alexcrea/cuanvil/dependency/scheduler/FoliaScheduler.kt

@@ -0,0 +1,40 @@
+package xyz.alexcrea.cuanvil.dependency.scheduler
+
+import io.papermc.paper.threadedregions.scheduler.ScheduledTask
+import org.bukkit.Bukkit
+import org.bukkit.entity.Entity
+import org.bukkit.plugin.Plugin
+import java.util.function.Consumer
+
+class FoliaScheduler : TaskScheduler {
+    override fun scheduleGlobally(plugin: Plugin, task: Runnable, time: Long): Any? {
+        if(time < 1){
+            return Bukkit.getGlobalRegionScheduler().run(
+                plugin
+            ) { scheduledTask: ScheduledTask? -> task.run() }
+        }
+        return Bukkit.getGlobalRegionScheduler().runDelayed(
+            plugin,
+            { scheduledTask: ScheduledTask? -> task.run() },
+            time
+        )
+    }
+
+
+    override fun scheduleOnEntity(plugin: Plugin, entity: Entity, task: Runnable, time: Long): Any? {
+        if(time < 1){
+            return entity.scheduler.run(
+                plugin,
+                { scheduledTask: ScheduledTask? -> task.run() },
+                {}
+            )
+        }
+        return entity.scheduler.runDelayed(
+            plugin,
+            { scheduledTask: ScheduledTask? -> task.run() },
+            {},
+            time
+        )
+    }
+    
+}