Split PR for MAISI augmentation

[Can-Zhao]

Fixes # .

Description

Add MAISI augmentation funcs. Refactor code: support cpu and gpu, unify the variable names, logic flow, and format of the five functions

Checks

• [x] Avoid including large-size files in the PR.
• [x] Clean up long text outputs from code cells in the notebook.
• [x] 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>

[Can-Zhao]

@KumoLiu Hi Yun, I created two small funcs to reuse some code. And tried my best to support cpu and gpu, unify the variable names, logic flow, and format of the five functions. I know there is more space to improve. But we do have to move on. Due is ahead.

[Can-Zhao]

Overall, LGTM. I also run local tests for augmentation of 5 tumor types. Augmentation results are expected except the pancreatic tumor.

Thank you testing it!!