Added Gamma Regressor

[aadityasinha-dotcom]

Issue Id you have worked upon -

#68

CHANGES MADE -

Added GammaRegressor.

Made changes to -

https://github.com/blobcity/autoai/blob/main/blobcity/config/regressor_config.py

NOTE -

Please consider this PR as a submission towards Hacktoberfest 2021 and add the hacktoberfest-accepted label to it.

[Thilakraj1998]

@aadityasinha-dotcom
import statement is wrong will throw an error.

change it to from sklearn import tree,ensemble,svm,linear_model,neighbors

and configuration has:

    "GammaRegressor":[
            linear_model.GammaRegressor,

[aadityasinha-dotcom]

@aadityasinha-dotcom
import statement is wrong will throw an error.

change it to from sklearn import tree,ensemble,svm,linear_model,neighbors

and configuration has:

    "GammaRegressor":[
            linear_model.GammaRegressor,

Ok

[aadityasinha-dotcom]

@Thilakraj1998 Can you review my changes?