task: add send common mail task

database/tcontent/model.py

@@ -0,0 +1,12 @@
+from sqlalchemy import Column, Integer, String, Text, DateTime, func
+from database.database import Base
+
+class TContent(Base):
+    __tablename__ = 't_content'
+
+    id = Column(Integer, primary_key=True, autoincrement=True, comment='自动递增的唯一内容ID')
+    project = Column(String(64), nullable=False, comment='项目名称', index=True)
+    subject = Column(String(256), nullable=False, comment='主题')
+    content = Column(Text, nullable=True, comment='内容')
+    create_time = Column(DateTime, server_default=func.now(), nullable=False, comment='创建时间')
+    update_time = Column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False, comment='更新时间')