Develop labeling module (#25)

* refactor: remove db table management from LS adapter (mv to scripts later); change adapter to use the same MySQL DB as other modules.

* refactor: Rename LS Adapter module to datamate-python

runtime/datamate-python/app/models/dm/annotation_template.py

@@ -0,0 +1,24 @@
+from sqlalchemy import Column, String, JSON, TIMESTAMP
+from sqlalchemy.sql import func
+from app.db.database import Base
+import uuid
+
+class AnnotationTemplate(Base):
+    """标注模板模型"""
+    
+    __tablename__ = "t_dm_annotation_templates"
+    
+    id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()), comment="UUID主键ID")
+    name = Column(String(32), nullable=False, comment="模板名称")
+    description = Column(String(255), nullable=True, comment="模板描述")
+    configuration = Column(JSON, nullable=True, comment="配置信息（JSON格式）")
+    created_at = Column(TIMESTAMP, server_default=func.current_timestamp(), comment="创建时间")
+    deleted_at = Column(TIMESTAMP, nullable=True, comment="删除时间（软删除）")
+    
+    def __repr__(self):
+        return f"<AnnotationTemplate(id={self.id}, name={self.name})>"
+    
+    @property
+    def is_deleted(self) -> bool:
+        """检查是否已被软删除"""
+        return self.deleted_at is not None