Scml

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* [docs] documentation and testing update.
* [setup] Making PyQT optional.
* [setup] Requiring negmas 0.6.13.

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* [docs] Adding more tutorials
* minor. Maing the controller optional in request_negotiations
* adding score to FactorySimulator to estimate final score

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* forcing negmas 0.6.11 or newer
* documentation update
* enabling setting the mechanism parameters in SCML2020World
* bugfix in PredictionBasedTradingStrategy

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* bugfix in the CLI when running tournament2019
* bugfix in MeanERPrediction for breached contracts
* making CheapBuyer compatible with the latest negmas version
* doc update
* removing all agent logs in built-in agents to speedup simulations
* changing cli script name back to cli.py. This was done to avoid a weird import error when running configs that use the cli in pycharm
* adding profiling info snapshot to the repository

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* minor updates to be compatible with the latest negmas
* documentation update
* avoid exception if gui is not installed

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* CI using Github Actions
* consolidating tests outside src directory
* Adding advanced script and upgrading negmas
* removing unnecessary init function from simulator
* showing shorter names in tournament run results