added labels and scroll to top btn

[AnjumanHasan]

👨‍💻 Changes proposed

1. Added labels on the main page under the sponsors and community sponsors section to increase the understandability and minimize the number of clicks.
2. Added a similar scroll to top button on the hacktoberfest 2022 page

✔️ Check List (Check all the applicable boxes)

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

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