Refactor MAISI tutorial, migrate GenerativeAI import

[Can-Zhao]

Fixes #1772 .

Description

Refactor MAISI tutorial, migrate GenerativeAI import to monai core.
Add inference script.
Correct logging format.
VAE training notebook tested.
Diffusion training notebook tested.
ControlNet training notebook tested.
Inference notebook tested.

Checks

• Avoid including large-size files in the PR.
• Clean up long text outputs from code cells in the notebook.
• For security purposes, please check the contents and remove any sensitive info such as user names and private key.
• Ensure (1) hyperlinks and markdown anchors are working (2) use relative paths for tutorial repo files (3) put figure and graphs in the ./figure folder
• Notebook runs automatically ./runner.sh -t <path to .ipynb file>

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MR is still in draft state. Maybe there are some more refactors

[Can-Zhao]

To pass CI, it requires monai core ControlNetMaisi to remove generative dependency first.

[mingxin-zheng]

To pass CI, it requires monai core ControlNetMaisi to remove generative dependency first.

It seems we can re-run it after this PR is merged:
Project-MONAI/MONAI#8005

[KumoLiu]

Hi @Can-Zhao, I find there is still one place need to be updated in the maisi: https://github.com/Project-MONAI/tutorials/blob/main/generation/maisi/configs/config_maisi_diff_model.json#L3

[Can-Zhao]

Hi @Can-Zhao, I find there is still one place need to be updated in the maisi: https://github.com/Project-MONAI/tutorials/blob/main/generation/maisi/configs/config_maisi_diff_model.json#L3

Submitted a PR for it #1786