Link up with Backend

[symt]

Even if we aren't to the point of enabling the collection check quite yet, we want to link up the mod with the endpoints of https://github.com/symt/api.bazaarnotifier

Where the old collection check was performed, we just want an http GET request (with the proper authorization header) to the endpoint https://api.meyi.dev/collections

The value returned is lined out in the api repository. it is a list of strings representing the collections/slayer in the response field of the root of the object.

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Also, I don't think I want to force the user to get some sort of API key from discord (maybe for future features, so that functionality should still exist in the repo). We'll see