Add FlaskConfigEntry

from flask import Flask

from clams import db

class FlaskConfigEntry(db.Model):

    """

    A configuration entry for Flask (a key-value pair) as persisted in a database

    """

    __tablename__ = "clams_flask_config"

    key = db.Column(db.String(256), primary_key=True)

    value = db.Column(db.String(4096))

    def apply(self, app: Flask) -> None:

        """

        Apply the config to the given application (i.e. set app.config[self.key] to self.value)

        """

        app.config[self.key] = self.value

from .FlaskConfigEntry import FlaskConfigEntry