Added SGDClassifier to classifier_config.py

[Devolta05]

Hello,
This PR aims to implement #38
Added SGDClassifier hyperparams to the classifier config dictionary to the classifier_config.py
Thanks :)

[Thilakraj1998]

@Devolta05 it has syntax error in configuration
do add missing comma's in the dictionary configuration

            "tol":{"float":[1e-3,0.1]},
            "learning_rate":{'str':['optimal','constant','invscaling','adaptive']}
            "eta0":{'float':[0.0, 0.1]}
            "power_t":{'float':[0.01, 0.5]]}
            "epsilon":{'float':[1e-8, 0.1]}

[Devolta05]

Sure @Thilakraj1998 I will do it asap

[Devolta05]

Thank you very much @Thilakraj1998