Including some additional features in Lottery and Voting smart contract

[Yash9276]

🛠️ Fixes Issue

👨‍💻 Changes proposed

this pull request is made because I want to merge changes I made to improve the functionality of the Lottery contract and Voting smart Contract Both contracts are more gas-efficient

✔️ Check List (Check all the applicable boxes)

• [✔️ ] My code follows the code style of this project.
• [✔️ ] This PR does not contain plagiarized content.
• [ ✔️] The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

Lottery contract I made with help and by taking reference free code camp blockchain tutorial

📷 Screenshots

[github-actions[bot]]

Our team will soon review your PR. Thanks @Yash9276 :)