improve: change db schema for settings

db/models/PathTemplate.py

@@ -0,0 +1,18 @@
+from sqlalchemy import Column, Integer, Text, UniqueConstraint, String
+
+from db.models import Base
+
+
+class PathTemplate(Base):
+    __tablename__ = 'path_template'
+    id = Column(Integer, primary_key=True)
+    title = Column(String(255), nullable=False)
+    structure = Column(Text, nullable=False)
+    __table_args__ = (UniqueConstraint("title", name="unique_title"),)
+
+    def to_dict(self):
+        return {
+            'id': self.id,
+            'title': self.title,
+            'structure': self.structure
+        }