Added waitinglist schema for mongo

schemas/waitinglistSchema.js

@@ -0,0 +1,10 @@
+const { Schema, model } = require('mongoose');
+
+const waitinglistSchema = new Schema({
+    _id: Schema.Types.ObjectId,
+    userID: { type: String, required: true },
+    uuid: { type: String, required: true },
+    IGN: { type: String, required: true },
+});
+
+module.exports = model('waitinglist', waitinglistSchema, 'waitinglist');