Pull Request for ML-Crate 💡

Issue Title: Salary Prediction

Info about the related issue (Aim of the project) : The goal of this project is to develop and enhance a machine learning model for predicting the salaries of data professionals based on various factors such as experience, job role, and performance ratings.
Name: Harshit Ghosh
Email ID for further communication: harshitghosh7@gmail.com
GitHub ID: Harshit Ghosh
Idenitfy yourself: Social Summer Of Code Season 3 Contributor

Closes: #667

Give a clear description of what have you added or modifications made

Data Preprocessing Enhancements: Added handling for outliers, advanced feature engineering, and improved methods for handling missing values.
Model Development: Implemented multiple machine learning algorithms, performed hyperparameter tuning, and used cross-validation for robustness.
Model Evaluation: Evaluated models using performance metrics such as MAE, MSE, RMSE, and R2. Added visualization plots for better understanding.
Documentation: Updated the README file to reflect enhancements,

What sort of change have you made:

[ ] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Code style update (formatting, local variables)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] This change requires a documentation update

Describe how it has been tested Describe how have you verified the changes made

[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 things that prove my fix is effective or that my feature works.
[x] Any dependent changes have been merged and published in downstream modules.