Read and write entity eye height in Vibration particle wrapper

Fixes joshuaprince/CoordinateOffset#9

Vibration particle data for vibrations emitted by entities contains
an "entity eye height" field. The ParticleVibrationData wrapper for
WrapperPlayServerParticle did not read or write this field, so any
usage of this wrapper would corrupt the packet and cause players to
be kicked when they moved near an entity that can receive vibrations
(i.e. Wardens).

Tested on 1.19.4 and 1.20.4. This field has been present and unchanged
since 1.19's changes to the Vibration particle (which is also the
first fully-released version to add Wardens):
https://wiki.vg/index.php?title=Data_types&oldid=17608#Particle

api/src/main/java/com/github/retrooper/packetevents/protocol/particle/data/ParticleVibrationData.java

@@ -80,6 +80,7 @@ public int getId(ClientVersion version) {
     private PositionType type;
     private @Nullable Vector3i blockPosition;
     private @Nullable Integer entityId;
+    private @Nullable Float entityEyeHeight;
     private int ticks;
 
     public ParticleVibrationData(Vector3i startingPosition, @Nullable Vector3i blockPosition, int ticks) {
@@ -90,11 +91,12 @@ public ParticleVibrationData(Vector3i startingPosition, @Nullable Vector3i block
         this.ticks = ticks;
     }
 
-    public ParticleVibrationData(Vector3i startingPosition, int entityId, int ticks) {
+    public ParticleVibrationData(Vector3i startingPosition, int entityId, float entityEyeHeight, int ticks) {
         this.startingPosition = startingPosition;
         this.type = PositionType.ENTITY;
         this.blockPosition = null;
         this.entityId = entityId;
+        this.entityEyeHeight = entityEyeHeight;
         this.ticks = ticks;
     }
 
@@ -126,6 +128,14 @@ public void setEntityId(int entityId) {
         this.entityId = entityId;
     }
 
+    public Optional<Float> getEntityEyeHeight() {
+        return Optional.ofNullable(entityEyeHeight);
+    }
+
+    public void setEntityEyeHeight(float entityEyeHeight) {
+        this.entityEyeHeight = entityEyeHeight;
+    }
+
     public int getTicks() {
         return ticks;
     }
@@ -153,7 +163,7 @@ public static ParticleVibrationData read(PacketWrapper<?> wrapper) {
             case BLOCK:
                 return new ParticleVibrationData(startingPos, wrapper.readBlockPosition(), wrapper.readVarInt());
             case ENTITY:
-                return new ParticleVibrationData(startingPos, wrapper.readVarInt(), wrapper.readVarInt());
+                return new ParticleVibrationData(startingPos, wrapper.readVarInt(), wrapper.readFloat(), wrapper.readVarInt());
             default:
                 throw new IllegalArgumentException("Illegal position type: " + positionType);
         }
@@ -174,6 +184,7 @@ public static void write(PacketWrapper<?> wrapper, ParticleVibrationData data) {
             wrapper.writeBlockPosition(data.getBlockPosition().get());
         } else if (data.getType() == PositionType.ENTITY) {
             wrapper.writeVarInt(data.getEntityId().get());
+            wrapper.writeFloat(data.getEntityEyeHeight().get());
         }
         wrapper.writeVarInt(data.getTicks());
     }