Add SD3 DreamBooth

[westfish]

No description provided.

[paddle-bot]

Thanks for your contribution!

[jerrywgz]

需要补充下单测

[westfish]

Done

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
2 out of 3 committers have signed the CLA.

✅ jerrywgz
✅ westfish
❌ luyao15

---

luyao15 seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}