Added Bitwarden to the Hacktoberfest Swag List (#741)

[biplobsd]

Thanks for contributing to the Hacktoberfest Swag List 😃 🎉! Before submitting your pull request, please check off as many of the items below as you can:

1. I have read the Contributing.md file and formatted this PR correctly
2. I'm not adding a company from the blocklist
3. I make sure to fix things promptly if an error or suggestion comes up

Thanks and Happy Hacktoberfest! 🎉
Tagging @crweiner to take a look. 👀

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[crweiner]

Hey @biplobsd! Thank you for adding Bitwarden to the Hacktoberfest Swag List! I personally really like Bitwarden and I'm happy to see them get into the Hacktoberfest spirit. 🎃 .

Thank you again for your contribution, and have a great Hacktoberfest!