[Feature] Support zunko lora projects

[okotaku]

Motivation

Tohoku Zunko Zundamon Project

Results (Optional)

stable_diffusion_v15_dreambooth_lora_zunko

Prompt is A photo of sks character in a bucket.

anythingv5_dreambooth_lora_zunko

Prompt is 1girl, sks, in a bucket.

stable_diffusion_xl_dreambooth_lora_zunko

Prompt is A photo of sks character in a bucket.

counterfeit_xl_dreambooth_lora_zunko

Prompt is 1girl, sks, in a bucket.

Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
• The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
• The documentation has been modified accordingly, like docstring or example tutorials.