Add atomize theme

[zhouyuxiang0]

This pull request adds the Atomize theme as a submodule to the Zed repository.

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: [email protected].
This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email [email protected]
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[cla-bot]

We require contributors to sign our Contributor License Agreement, and we don't have @zhouyuxiang0 on file. You can sign our CLA at https://zed.dev/cla. Once you've signed, post a comment here that says '@cla-bot check'.

[zhouyuxiang0]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[maxdeviant]

Thank you!