Manually disconnect client on LoginDisconnectPacket (#950)

The client will not get kicked on a LoginDisconnectPacket causing them to remain in an empty world perpetually.

connector/src/main/java/org/geysermc/connector/network/translators/java/JavaLoginDisconnectTranslator.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
+ *
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *
+ *  The above copyright notice and this permission notice shall be included in
+ *  all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ *  THE SOFTWARE.
+ *
+ *  @author GeyserMC
+ *  @link https://github.com/GeyserMC/Geyser
+ *
+ */
+
+package org.geysermc.connector.network.translators.java;
+
+import com.github.steveice10.mc.protocol.packet.login.server.LoginDisconnectPacket;
+import org.geysermc.connector.network.session.GeyserSession;
+import org.geysermc.connector.network.translators.PacketTranslator;
+import org.geysermc.connector.network.translators.Translator;
+import org.geysermc.connector.utils.MessageUtils;
+
+@Translator(packet = LoginDisconnectPacket.class)
+public class JavaLoginDisconnectTranslator extends PacketTranslator<LoginDisconnectPacket> {
+
+    @Override
+    public void translate(LoginDisconnectPacket packet, GeyserSession session) {
+        // The client doesn't manually get disconnected so we have to do it ourselves
+        session.disconnect(MessageUtils.getTranslatedBedrockMessage(packet.getReason(), session.getClientData().getLanguageCode()));
+    }
+}