feat: add more features declaration (#732)

Author: MC-XiaoHei

leaves-api/src/main/java/org/leavesmc/leaves/plugin/Features.java

@@ -6,4 +6,6 @@ public class Features {
     public static final String FAKEPLAYER = "fakeplayer";
     public static final String PHOTOGRAPHER = "photographer";
     public static final String RECORDER = "recorder";
+    public static final String BYTEBUF = "bytebuf";
+    public static final String UPDATE_SUPPRESSION_EVENT = "update_suppression_event";
 }

leaves-server/src/main/java/org/leavesmc/leaves/plugin/ServerFeatureManager.java

@@ -13,7 +13,9 @@ public class ServerFeatureManager implements FeatureManager {
     private ServerFeatureManager() {
         availableFeatures.addAll(Set.of(
             FAKEPLAYER,
-            PHOTOGRAPHER
+            PHOTOGRAPHER,
+            BYTEBUF,
+            UPDATE_SUPPRESSION_EVENT
         ));
         if (Boolean.getBoolean("leavesclip.enable.mixin")) {
             availableFeatures.add(MIXIN);