Migration of Remote.gui plugin to GAMA 2024-06 may have broken communication

[benoitgaudou]

I just migrated the remote.gui plugin to the branch 2024-06.
I made it compiles.
Nevertheless, it is built on MQTT communication, that uses an XStream serialisation.
With the new serialisation in GAMA, Xstream is not avilable anymore.
I replace the code of the 2 methods serializing and unserializing data using the current serialization mecanism, using a binary (un)serialising.

I have not tested, but I have the feeling that this will make the communication more complex with external software.
Maybe switch to a JSON serializing ?

[AlexisDrogoul]

JSON would be preferable -- maybe the option to choose from binary to json should be included in the different protocols / messaging capabilities ?