Add basic Datapack API

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>

paper-api/src/main/java/org/bukkit/Bukkit.java

@@ -328,9 +328,11 @@ public final class Bukkit {
     /**
      * Get the DataPack Manager.
      *
+     * @deprecated use {@link #getDatapackManager()}
      * @return the manager
      */
     @NotNull
+    @Deprecated(forRemoval = true, since = "1.20")
     public static DataPackManager getDataPackManager() {
         return server.getDataPackManager();
     }
@@ -2641,6 +2643,14 @@ public final class Bukkit {
     public static com.destroystokyo.paper.entity.ai.MobGoals getMobGoals() {
         return server.getMobGoals();
     }
+
+    /**
+     * @return the datapack manager
+     */
+    @NotNull
+    public static io.papermc.paper.datapack.DatapackManager getDatapackManager() {
+        return server.getDatapackManager();
+    }
     // Paper end
 
     @NotNull

paper-api/src/main/java/org/bukkit/Material.java

@@ -5654,6 +5654,7 @@ public enum Material implements Keyed, Translatable, net.kyori.adventure.transla
      * @param world the world to check
      * @return true if this material can be used in this World.
      */
+    @Deprecated(forRemoval = true, since = "1.20") // Paper
     public boolean isEnabledByFeature(@NotNull World world) {
         if (isItem()) {
             return Bukkit.getDataPackManager().isEnabledByFeature(asItemType(), world);

paper-api/src/main/java/org/bukkit/Server.java

@@ -267,9 +267,11 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
     /**
      * Get the DataPack Manager.
      *
+     * @deprecated use {@link #getDatapackManager()}
      * @return the manager
      */
     @NotNull
+    @Deprecated(forRemoval = true, since = "1.20") // Paper
     public DataPackManager getDataPackManager();
 
     /**
@@ -2302,5 +2304,11 @@ public interface Server extends PluginMessageRecipient, net.kyori.adventure.audi
      */
     @NotNull
     com.destroystokyo.paper.entity.ai.MobGoals getMobGoals();
+
+    /**
+     * @return the datapack manager
+     */
+    @NotNull
+    io.papermc.paper.datapack.DatapackManager getDatapackManager();
     // Paper end
 }

paper-api/src/main/java/org/bukkit/entity/EntityType.java

@@ -485,6 +485,7 @@ public enum EntityType implements Keyed, Translatable, net.kyori.adventure.trans
      * @param world the world to check
      * @return true if this EntityType can be used to spawn an Entity for this World.
      */
+    @Deprecated(forRemoval = true, since = "1.20") // Paper
     public boolean isEnabledByFeature(@NotNull World world) {
         return Bukkit.getDataPackManager().isEnabledByFeature(this, world);
     }

paper-api/src/main/java/org/bukkit/packs/DataPack.java

@@ -9,7 +9,9 @@ import org.jetbrains.annotations.NotNull;
  * Represents a data pack.
  *
  * @see <a href="https://minecraft.wiki/w/Data_pack">Minecraft wiki</a>
+ * @deprecated use {@link io.papermc.paper.datapack.Datapack}
  */
+@Deprecated(forRemoval = true, since = "1.20") // Paper
 public interface DataPack extends Keyed {
 
     /**

paper-api/src/main/java/org/bukkit/packs/DataPackManager.java

@@ -13,7 +13,9 @@ import org.jetbrains.annotations.Nullable;
 
 /**
  * Manager of data packs.
+ * @deprecated use {@link io.papermc.paper.datapack.DatapackManager}
  */
+@Deprecated(forRemoval = true, since = "1.20") // Paper
 public interface DataPackManager {
 
     /**