Implemented Decision Tree Regression with the required preprocessed e…

[Adiii1436]

…ntities

Linked Issue

Closes: #11

Describe the changes you've made

I have added the decision tree regression model.

Type of change

I have added the decision tree regression model that has accuracy of 99% and r2 scroe 0.99. I've trained it on xtrain and ytrain and predicted on the value of xtest.

How Has This Been Tested?

Describe how have you verified the changes made

Checklist:

• [x] My code follows the guidelines of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly wherever it was hard to understand.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [x] I have added tests that prove my fix is effective or that my feature works.
• [x] Any dependent changes have been merged and published in downstream modules.

Screenshots

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Original Screenshot	Updated Screenshot

[anuragc2001]

@Adiii1436 can you once again open a PR for this issue, there are merge conflicts happening when merging your PR.