Add & implement EntityMoveEvent

src/main/java/emu/grasscutter/server/event/entity/EntityMoveEvent.java

@@ -0,0 +1,31 @@
+package emu.grasscutter.server.event.entity;
+
+import emu.grasscutter.game.entity.GameEntity;
+import emu.grasscutter.net.proto.MotionStateOuterClass.MotionState;
+import emu.grasscutter.server.event.types.EntityEvent;
+import emu.grasscutter.utils.Position;
+
+public final class EntityMoveEvent extends EntityEvent {
+    private final Position position, rotation;
+    private final MotionState motionState;
+
+    public EntityMoveEvent(GameEntity entity, Position position, Position rotation, MotionState motionState) {
+        super(entity);
+
+        this.position = position;
+        this.rotation = rotation;
+        this.motionState = motionState;
+    }
+
+    public Position getPosition() {
+        return this.position;
+    }
+
+    public Position getRotation() {
+        return this.rotation;
+    }
+
+    public MotionState getMotionState() {
+        return this.motionState;
+    }
+}