renamed AI_Model to AIModel for consistency, added it as a functioning drop-down select on settings page, added face_distance to db and code, put face_distance model_used into all classes ready for use

pa_job_manager.py

@@ -227,6 +227,14 @@ class Refimg(Base):
     def __repr__(self):
         return f"<id: {self.id}, fname: {self.fname}, created_on: {self.created_on}>"
 
+class AIModel(Base):
+    __tablename__ = "ai_model"
+    id = Column(Integer, primary_key=True )
+    name = Column(String)
+
+    def __repr__(self):
+        return f"<id: {self.id}, name: {self.name}>"
+
 class Face(Base):
     __tablename__ = "face"
     id = Column(Integer, Sequence('face_id_seq'), primary_key=True )
@@ -240,6 +248,7 @@ class FaceFileLink(Base):
     __tablename__ = "face_file_link"
     face_id = Column(Integer, ForeignKey("face.id"), primary_key=True )
     file_eid = Column(Integer, ForeignKey("file.eid"), primary_key=True )
+    model_used = Column(Integer, ForeignKey("ai_model.id") )
 
     def __repr__(self):
         return f"<face_id: {self.face_id}, file_eid={self.file_eid}"
@@ -248,6 +257,8 @@ class FaceRefimgLink(Base):
     __tablename__ = "face_refimg_link"
     face_id = Column(Integer, ForeignKey("face.id"), primary_key=True )
     refimg_id = Column(Integer, ForeignKey("refimg.id"), primary_key=True )
+    model_used = Column(Integer, ForeignKey("ai_model.id") )
+    face_distance = Column(Integer)
 
     def __repr__(self):
         return f"<face_id: {self.face_id}, refimg_id={self.refimg_id}"