Closes #4: Lasso Model Added

[Atharva-D]

Please Label it as Hacktoberfest accepted.

Description

I have added a Lasso Regression model for the used car price prediction. Kindly review it and merge it.

Fixes 4 (Add a ridge/lasso model)

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [ x] My code follows the style guidelines of this project
• [x ] I have performed a self-review of my own code
• [ x] I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• [x ] My changes generate no new warnings
• [ x] Any dependent changes have been merged and published in downstream modules
• [ x] I have checked my code and corrected any misspellings

[Manomay15]

Please save the model in a pkl file and add it app.py for it to show the prediction. An example of how other models are loaded is pasted below

Also, no need to commit the python file