Simplifying the setup check

[warlof]

We must find a more generic way to :

• store driver setup
• determine if a driver is properly setup or not

seat-notifications/src/Drivers/DiscordNotificationDriver.php

Lines 119 to 123 in 6f9487d

	public static function isSetup(): bool
	{
	return ! is_null(setting('herpaderp.seatnotifications.discord.credentials.bot_token', true));
	}