Change default ports of game servers

[sven-n]

Describe the bug
Windows uses ports starting from 49152 to establish connections, so the game server ports (starting from 55901) might be problematic.

To Reproduce
Steps to reproduce the behavior:

1. Leave and use your system online for some hours or days
2. Try to start the OpenMU server on the same system or on a docker instance
3. Experience that you cannot connect to a game server, because the port is already in use by another process.

Expected behavior
The game server default ports should be changed to something below 49152.
Maybe 45000 is a good starting port.

Additional context
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/default-dynamic-port-range-tcpip-chang
https://www.sciencedirect.com/topics/computer-science/registered-port#:%7E:text=Dynamic%20ports%E2%80%94Ports%20in%20the,but%20many%20systems%20do%20not

... the ports from 49152 to 65535 can be used dynamically by applications.