- 调整了项目结构，将 chat 相关的类移动到 agent/core/chat 包中

- 添加了配置管理功能，支持从文件加载配置
- 添加CoreModel、SliceEvaluator、TaskTrigger、TopicExtractor几个必要模型，具体交互逻辑等待完善
- 优化了记忆图谱的初始化和序列化逻辑,并添加了新的modelPrompt、chatMessages字段

src/test/java/memory/InsertTest.java

@@ -3,7 +3,7 @@ package memory;
 import org.junit.Before;
 import org.junit.Test;
 import work.slhaf.agent.core.memory.MemoryGraph;
-import work.slhaf.agent.core.memory.content.MemorySlice;
+import work.slhaf.agent.core.memory.pojo.MemorySlice;
 import work.slhaf.agent.core.memory.node.MemoryNode;
 import work.slhaf.agent.core.memory.node.TopicNode;