Generate license key for MobaXterm.

It uses python 3 to generate a fake license.

Usage:
    python3 MobaXterm-Keygen.py <UserName> <Version>

    <UserName>:      The Name licensed to <me>
    <Version>:       The Version of MobaXterm <23.4>

Example:

PS path\to\MobaXterm-keygen>python3 MobaXterm-Keygen.py me 23.4
[*] Success!
[*] File generated: /path/to/MobaXterm-keygen/Custom.mxtpro
[*] Please move or copy the newly-generated file to MobaXterm's installation path.

Then copy Custom.mxtpro to %ProgramFiles%\MobaXterm\v23.4\.

1. This application does not have complex activation algorithm and it is truly fantastic. So please pay for it if possible.

2. The file generated, Custom.mxtpro, is actually a zip file and contains a text file, Pro.key, where there is a key string.

3. MobaXterm.exe has another mode. You can see it by adding a parameter "-customizer".

   $ .\MobaXterm.exe -customizer
   

   I don't know how to make custom settings take effect in Customizer mode directly.

   The only way I found is that you should export custom settings to a file named MobaXterm customization.custom which is also a zip file. Then merge two zip file: Custom.mxtpro and MobaXterm customization.custom to Custom.mxtpro. Finally copy newly-generated Custom.mxtpro to MobaXterm's installation path.