Add Label Studio adapter module and its build scipts.

runtime/label-studio-adapter/app/models/dataset_mapping.py

@@ -0,0 +1,25 @@
+from sqlalchemy import Column, String, DateTime, Boolean, Text
+from sqlalchemy.sql import func
+from app.db.database import Base
+import uuid
+
+class DatasetMapping(Base):
+    """数据集映射模型"""
+    
+    __tablename__ = "mapping"
+    
+    mapping_id = Column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
+    source_dataset_id = Column(String(36), nullable=False, comment="源数据集ID")
+    labelling_project_id = Column(String(36), nullable=False, comment="标注项目ID")
+    labelling_project_name = Column(String(255), nullable=True, comment="标注项目名称")
+    created_at = Column(DateTime(timezone=True), server_default=func.now(), comment="创建时间")
+    last_updated_at = Column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), comment="最后更新时间")
+    deleted_at = Column(DateTime(timezone=True), nullable=True, comment="删除时间")
+    
+    def __repr__(self):
+        return f"<DatasetMapping(uuid={self.mapping_id}, source={self.source_dataset_id}, labelling={self.labelling_project_id})>"
+    
+    @property
+    def is_deleted(self) -> bool:
+        """检查是否已被软删除"""
+        return self.deleted_at is not None