Placement-Prediction-Web-App Added

[aishani20]

Fixes Issue

Closes #999

Changes proposed

I have developed a Placement Prediction Web App[Machine Learning Based Model using Logistic Regression] which I want to add to this Repository. My project has been deployed using Streamlit Cloud so that users can easily access it.

Check List (Check all the applicable boxes)

• [x] My code follows the code style of this project.
• [ ] My change requires changes to the documentation.
• [x] I have updated the documentation accordingly.
• [x] This PR does not contain plagiarized content.
• [ ] The title of my pull request is a short description of the requested changes.

[Anubhavdevv]

LGTM! @aishani20 🚀 Thanks for your valuable contribution ✨ Hope you like the repo Do Give a star to this repo ✨