[FEATURE]: Change Trainspace GET endpoints to support new Training Flow

[ssh51117]

Feature Name

Change Trainspace GET endpoints to support new Training Flow

Your Name

Seth Shi

Description

Create trainspace now posts to a different dynamodb table, so we need to change the GET method to retrieve data from the new table, both for getting all trainspaces and getting on specific trainspace.

[github-actions]

Hello @ssh51117! Thank you for submitting the Feature Request Form. We appreciate your contribution. 👋

We will look into it and provide a response as soon as possible.

To work on this feature request, you can follow these branch setup instructions:

1. Checkout the main branch:

```
 git checkout nextjs
```

2. Pull the latest changes from the remote main branch:

```
 git pull origin nextjs
```

3. Create a new branch specific to this feature request using the issue number:

```
 git checkout -b feature-1120
```

Feel free to make the necessary changes in this branch and submit a pull request when you're ready.

Best regards,
Deep Learning Playground (DLP) Team