add examples for training and inference using diffusers

[AK391]

Hi, similar to https://github.com/huggingface/diffusers/tree/main/examples/textual_inversion, would you be interested in adding example notebook for training and inference using the diffusers pipeline?

[ShivamShrirao]

It can be found here https://github.com/huggingface/diffusers/pull/554