SRV resolving / Small Handshake rework (#968)

Handshake now uses the server address directly from the config and no longer the IP from a domain (Some servers use the address that is given during the handshake)

bootstrap/sponge/src/main/java/org/geysermc/platform/sponge/GeyserSpongeConfiguration.java

@@ -195,11 +195,21 @@ public class GeyserSpongeConfiguration implements GeyserConfiguration {
             return node.getNode("address").getString("127.0.0.1");
         }
 
+        @Override
+        public void setAddress(String address) {
+            node.getNode("address").setValue(address);
+        }
+
         @Override
         public int getPort() {
             return node.getNode("port").getInt(25565);
         }
 
+        @Override
+        public void setPort(int port) {
+            node.getNode("port").setValue(port);
+        }
+
         @Override
         public String getAuthType() {
             return node.getNode("auth-type").getString("online");