refactor: Remove emoji system and chat filters, implement SOLID architecture

src/main/java/com/loki/lochat/api/service/PlayerDataService.java

@@ -0,0 +1,11 @@
+package com.loki.lochat.api.service;
+
+import java.util.UUID;
+
+/**
+ * Сервис для работы с данными игроков
+ */
+public interface PlayerDataService {
+    void clearPlayerData(UUID player);
+    void saveAll();
+}