Read Hebbian lookup tables from a file

[FutureAIGuru]

Is your feature request related to a problem? Please describe. The only way to experiment with different Hebbian models is to modify the source code in NeuronBase.cpp

Describe the solution you'd like These could be read from a file which could be edited with notepad. OR, there could be a UI and the content of the models could be stored in the network file

[ghost]

The latter would be preferable, since that makes sure the proper values are used for a network once it gets reloaded.

[ghost]

But a hybrid of the two would suffice: since this is not a very frequent setting, the UI might be left out in favor of more flexible handling:

• If a new network is created, read the default lookup tables from file.
• If a network is saved, include the current lookup table in the XML file.
• If a network is loaded and includes lookups, use these.
• If a network is loaded and has no lookups, read the default lookup from file. This way we can easily edit the values and the number of values, without having to have a very flexible UI to be able to do so.