Add user login form

app/forms.py

@@ -0,0 +1,10 @@
+from flask_wtf import FlaskForm
+from wtforms import StringField, PasswordField, BooleanField, SubmitField
+from wtforms.validators import ValidationError, DataRequired, Email, EqualTo
+
+
+class LoginForm(FlaskForm):
+    username = StringField('Username', validators=[DataRequired()])
+    password = PasswordField('Password', validators=[DataRequired()])
+    remember_me = BooleanField('Remember Me')
+    submit = SubmitField('Sign In')