Save amazon-sagemaker template to enable one-click start

### Product Version

- [ ] Amazon SageMaker Studio Classic
- [x] Amazon SageMaker Studio
- [ ] It is not related to SageMaker Studio

### Product Category

JumpStart

### Description

I see myself running sagemaker-jumpstart in bursts when I need them. I typically start an instance, use it for a few hours at a stretch and shutdown when the work (to save on cost) is done through GUI. I do all of this manually in GUI.
When I have to restart, I go through same multistep startup process again.
I am requesting ability to save template so that the restart process can be a single click instead of multistep process.
I am not sure it currently allows for it in any in the GUI itself.

### Other Details

_No response_

Start by reviewing the Amazon SageMaker Studio JumpStart startup workflow and the existing GUI steps described in the issue. Determine whether saved templates are already supported, then define the template contents and verify that a saved configuration can restart the workflow with one click.

Written by the indexing model from the issue text.