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

settings.py

@@ -12,7 +12,7 @@ from flask_login import login_required, current_user
 ################################################################################
 # Class describing AI_MODEL in the database, and via sqlalchemy, connected to the DB as well
 ################################################################################
-class AI_Model(db.Model):
+class AIModel(db.Model):
     __tablename__ = "ai_model"
     id = db.Column(db.Integer, primary_key=True )
     name = db.Column(db.String)
@@ -20,6 +20,7 @@ class AI_Model(db.Model):
     def __repr__(self):
         return f"<id: {self.id}, name: {self.name}>"
 
+
 ################################################################################
 # Class describing Settings in the database, and via sqlalchemy, connected to the DB as well
 ################################################################################
@@ -53,7 +54,7 @@ class SettingsForm(FlaskForm):
     import_path = StringField('Path(s) to import from:', [validators.DataRequired()])
     storage_path = StringField('Path to store sorted images to:', [validators.DataRequired()])
     recycle_bin_path = StringField('Path to temporarily store deleted images in:', [validators.DataRequired()])
-    default_model = SelectField( 'default_model',  choices=[(c.id, c.name) for c in AI_Model.query.order_by('id')] )
+    default_model = SelectField( 'default_model',  choices=[(c.id, c.name) for c in AIModel.query.order_by('id')] )
     default_threshold = StringField('Face Distance threshold (below is a match):', [validators.DataRequired()])
     submit = SubmitField('Save' )