Subscribe to newsletter frontend backend done : #245 done

[VinayLodhi1712]

**Title: Subscribe to newsletter frontend backend done **

Issue No.: #245 done

Close #245

Screenshots/Video (mandatory)

20241026004710.mp4

Changes -

1. Created newsletter schema for storing subscribing mails.
2. creating api controllers to send the confirmation mail to the user using nodemailer.
3. creating frontend of the input field and button and sending message accordingly in footer.
4. the input field and the message get set to null after 7 seconds.

For successfully working make sure that

You are putting your email id and corresponding 16 digit passkey for smtp protocol through nodemailer in .env file.

After this you will get the output like this -

Checklist:

• [X ] I have mentioned the issue number in my Pull Request.
• [ X] I have commented my code, particularly in hard-to-understand areas.
• [ X] I have created a helpful and easy-to-understand README.md if it's a new page/tech stack.
• [X ] I have gone through the contributing.md file before contributing.

Additional context (Mandatory):

Are you contributing under any Open-source programme?

• [X ] I'm a GSSOC-EXT contributor
• [X ] I'm a HACKTOBERFEST contributor

[netlify]

👷 Deploy request for bitbox-in accepted.

Name	Link
🔨 Latest commit	8a69afb
🔍 Latest deploy log	https://app.netlify.com/sites/bitbox-in/deploys/671bf210e7670b000841cc75

[github-actions]

Thank you for submitting your pull request! 🙌 We'll review it as soon as possible. In the meantime, please ensure that your changes align with our chaotic CONTRIBUTING.md. If there are any specific instructions or feedback regarding your PR, we'll provide them here. Thanks again for your contribution! 😊

[Anuj3553]

Well done @VinayLodhi1712

[github-actions]

🎉🎉 Thank you for your contribution! Your PR #251 has been merged! 🎉🎉