Review and automate examples

[gcattan]

Scope of this issue:

• Add n_jobs and n_jobs_evaluation in all examples
• Review and re-run examples
• Automate short examples on Ci-Cd
• Automate long examples to run every month on master

List of examples:
ERP:

• classify_P300_bi_illiteracy.py (in Extract judge classifier to ensemble module #242)
• classify_P300_bi_quantum_mdm.py
• firebase_moabb.py
• plot_classify_EEG_quantum_svm.py
• plot_classify_P300_bi.py

MI:

• classify_alexmi_with_quantum.py (in Update noplot_classify_alexmi_with_quantum_pipeline.py #350)
• multiclass_classification.py
• plot_compare_dim_red.py

Others:

• plot_financial_data.py (in Create preprocessing.py #238)
• plot_tuotiral_quantum_svm_titanic.py

Toys:

• plot_classifier_comparision.py
• plot_quantum_art_vqc.py